Paper/patches/api/0055-Fix-upstream-javadocs.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 10 Jun 2017 16:59:40 -0500
Subject: [PATCH] Fix upstream javadocs

Upstream still refuses to use Java 8 with the API so they are likely unaware these are even issues.

diff --git a/src/main/java/org/bukkit/BanList.java b/src/main/java/org/bukkit/BanList.java
index 96ef22fe879c7be4f67bbb4d60c45ad11764dd5b..5dc9f9ede98d93925c99ee382e93f15f33589583 100644
--- a/src/main/java/org/bukkit/BanList.java
+++ b/src/main/java/org/bukkit/BanList.java
@@ -27,6 +27,9 @@ public interface BanList {
 
     /**
      * Gets a {@link BanEntry} by target.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported and this method will return
+     * null when trying to request them. The replacement is bans by UUID.
      *
      * @param target entry parameter to search for
      * @return the corresponding entry, or null if none found
@@ -35,8 +38,11 @@ public interface BanList {
     public BanEntry getBanEntry(@NotNull String target);
 
     /**
-     * Adds a ban to the this list. If a previous ban exists, this will
+     * Adds a ban to this list. If a previous ban exists, this will
      * update the previous entry.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported and this method will return
+     * null when trying to request them. The replacement is bans by UUID.
      *
      * @param target the target of the ban
      * @param reason reason for the ban, null indicates implementation default
@@ -60,6 +66,9 @@ public interface BanList {
     /**
      * Gets if a {@link BanEntry} exists for the target, indicating an active
      * ban status.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported.
+     * The replacement is bans by UUID.
      *
      * @param target the target to find
      * @return true if a {@link BanEntry} exists for the name, indicating an
@@ -70,6 +79,9 @@ public interface BanList {
     /**
      * Removes the specified target from this list, therefore indicating a
      * "not banned" status.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported.
+     * The replacement is bans by UUID.
      *
      * @param target the target to remove from this list
      */
diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index 0e83259a03292daf5c069d570a324ae0323351ef..1704d04097c9d364e5f9049a6a0f60945db482dd 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -1300,10 +1300,7 @@ public final class Bukkit {
     }
 
     /**
-     * Gets a ban list for the supplied type.
-     * <p>
-     * Bans by name are no longer supported and this method will return
-     * null when trying to request them. The replacement is bans by UUID.
+     * Gets a ban list for the supplied type. <!-- Paper Remove notice: wrong place -->
      *
      * @param type the type of list to fetch, cannot be null
      * @return a ban list of the specified type
@@ -1365,6 +1362,8 @@ public final class Bukkit {
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
diff --git a/src/main/java/org/bukkit/ChunkSnapshot.java b/src/main/java/org/bukkit/ChunkSnapshot.java
index 803d4de580acc616424922fee4715a689b778886..94ab204a0739163613a5c651329606924c75d85b 100644
--- a/src/main/java/org/bukkit/ChunkSnapshot.java
+++ b/src/main/java/org/bukkit/ChunkSnapshot.java
@@ -137,7 +137,7 @@ public interface ChunkSnapshot {
      * Get raw biome temperature at given coordinates
      *
      * @param x X-coordinate (0-15)
-     * @param y Y-coordinate (0-15)
+     * @param y Y-coordinate (world minHeight (inclusive) - world maxHeight (exclusive))
      * @param z Z-coordinate (0-15)
      * @return temperature at given coordinate
      */
diff --git a/src/main/java/org/bukkit/RegionAccessor.java b/src/main/java/org/bukkit/RegionAccessor.java
index a73c954aad2957c630b64e7b750f33f73809f9b1..8264599a873ed23ec6552d1550a414ec3712487b 100644
--- a/src/main/java/org/bukkit/RegionAccessor.java
+++ b/src/main/java/org/bukkit/RegionAccessor.java
@@ -159,7 +159,7 @@ public interface RegionAccessor {
      * Creates a tree at the given {@link Location}
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @return true if the tree was created successfully, otherwise false
      */
@@ -171,14 +171,14 @@ public interface RegionAccessor {
      * The provided consumer gets called for every block which gets changed
      * as a result of the tree generation. When the consumer gets called no
      * modifications to the world are done yet. Which means, that calling
-     * {@link #getBlockState(Location)} in the consumer while return the state
+     * {@link #getBlockState(Location)} in the consumer will return the state
      * of the block before the generation.
      * <p>
      * Modifications done to the {@link BlockState} in the consumer are respected,
      * which means that it is not necessary to call {@link BlockState#update()}
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @param stateConsumer The consumer which should get called for every block which gets changed
      * @return true if the tree was created successfully, otherwise false
@@ -198,7 +198,7 @@ public interface RegionAccessor {
      * If it returns {@code false} the block won't get set in the world.
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @param statePredicate The predicate which should get used to test if a block should be set or not.
      * @return true if the tree was created successfully, otherwise false
diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
index f8592dbe75680133e5db1e166fac48957c57cac9..dca2cbe8c93469c8c1c404bc34748a9dcf6d3368 100644
--- a/src/main/java/org/bukkit/Server.java
+++ b/src/main/java/org/bukkit/Server.java
@@ -543,13 +543,10 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
      * </ul>
      * <p>
      * <b>Note:</b> If set to 0, {@link SpawnCategory} mobs spawning will be disabled.
-     * <p>
-     * Minecraft default: 1.
-     * <br>
-     * <b>Note: </b> the {@link SpawnCategory#MISC} are not consider.
      *
      * @param spawnCategory the category of spawn
      * @return the default ticks per {@link SpawnCategory} mobs spawn value
+     * @throws IllegalArgumentException if the category is {@link SpawnCategory#MISC}
      */
     public int getTicksPerSpawns(@NotNull SpawnCategory spawnCategory);
 
@@ -1109,10 +1106,7 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
     public Set<OfflinePlayer> getBannedPlayers();
 
     /**
-     * Gets a ban list for the supplied type.
-     * <p>
-     * Bans by name are no longer supported and this method will return
-     * null when trying to request them. The replacement is bans by UUID.
+     * Gets a ban list for the supplied type. <!-- Paper Remove notice: wrong place -->
      *
      * @param type the type of list to fetch, cannot be null
      * @return a ban list of the specified type
@@ -1162,6 +1156,8 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index 80189c7c70d7043016a24c0ac87655636408856e..a53a990477fd84f7f7dcb50058819eead8e8b5b5 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -2556,7 +2556,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link StructureType}.
      * Finding unexplored structures can, and will, block if the world is
-     * looking in chunks that gave not generated yet. This can lead to the world
+     * looking in chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
@@ -2590,7 +2590,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link StructureType}.
      * Finding unexplored structures can, and will, block if the world is
-     * looking in chunks that gave not generated yet. This can lead to the world
+     * looking in chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
@@ -2623,7 +2623,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link Structure}. Finding
      * unexplored structures can, and will, block if the world is looking in
-     * chunks that gave not generated yet. This can lead to the world
+     * chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
diff --git a/src/main/java/org/bukkit/block/Bed.java b/src/main/java/org/bukkit/block/Bed.java
index 92532e335f07b14d1dad0de90c10f764d5fd9d8b..f4c37ce1fe7aac3dde8485ee51fc8888ed56e79e 100644
--- a/src/main/java/org/bukkit/block/Bed.java
+++ b/src/main/java/org/bukkit/block/Bed.java
@@ -4,7 +4,22 @@ import org.bukkit.material.Colorable;
 
 /**
  * Represents a captured state of a bed.
- * @deprecated does not provide useful information beyond the block type itself
  */
-@Deprecated
-public interface Bed extends TileState, Colorable { }
+// Paper start
+// @Deprecated
+public interface Bed extends TileState, Colorable {
+
+    @Override
+    @org.jetbrains.annotations.NotNull org.bukkit.DyeColor getColor();
+
+    /**
+     * <b>Unsupported</b>
+     *
+     * @throws UnsupportedOperationException not supported, set the block type
+     */
+    @Override
+    @org.jetbrains.annotations.Contract("_ -> fail")
+    @Deprecated(forRemoval = true)
+    void setColor(@org.bukkit.UndefinedNullability("not supported") org.bukkit.DyeColor color);
+// Paper end
+}
diff --git a/src/main/java/org/bukkit/block/Block.java b/src/main/java/org/bukkit/block/Block.java
index 1197cb8a6be92296c494010d87e046dfe912a161..d834e8d8d532ce5b46201ff5c02d54a6c047f615 100644
--- a/src/main/java/org/bukkit/block/Block.java
+++ b/src/main/java/org/bukkit/block/Block.java
@@ -356,7 +356,7 @@ public interface Block extends Metadatable, Translatable {
      * Gets the temperature of this block.
      * <p>
      * If the raw biome temperature without adjusting for height effects is
-     * required then please use {@link World#getTemperature(int, int)}.
+     * required then please use {@link World#getTemperature(int, int, int)}.
      *
      * @return Temperature of this block
      */
diff --git a/src/main/java/org/bukkit/block/data/BlockData.java b/src/main/java/org/bukkit/block/data/BlockData.java
index dd286dd68682658af096790c048b88ee0c401214..7f4a858ab98f8d0c3c2f890ca88bc13b6ba967fa 100644
--- a/src/main/java/org/bukkit/block/data/BlockData.java
+++ b/src/main/java/org/bukkit/block/data/BlockData.java
@@ -208,15 +208,13 @@ public interface BlockData extends Cloneable {
     /**
      * Gets the ItemType that a player would use to place this block.
      * <p>
-     * For most blocks this is the same as {@link BlockType#asItemType()} but some blocks
-     * have different item types used to place them.
-     *
+     * This is identical to {@link BlockType#getItemType()}.
      * For example:
      * <pre>
      * {@link ItemType#REDSTONE_WIRE} -> {@link BlockType#REDSTONE}
      * {@link ItemType#CARROTS} -> {@link BlockType#CARROT}
      * </pre>
-     * @return placement item type
+     * @return placement item type or {@link ItemType#AIR} if it doesn't have one
      */
     @NotNull
     ItemType getPlacementType();
diff --git a/src/main/java/org/bukkit/block/data/FaceAttachable.java b/src/main/java/org/bukkit/block/data/FaceAttachable.java
index 9599e1237b9717ddbf84c3738bf6c1293e8b3c54..950266b4bb0a2fabeb9539c5676ed58f0b0fe620 100644
--- a/src/main/java/org/bukkit/block/data/FaceAttachable.java
+++ b/src/main/java/org/bukkit/block/data/FaceAttachable.java
@@ -38,7 +38,7 @@ public interface FaceAttachable extends BlockData {
          */
         WALL,
         /**
-         * The switch is mounted to the ceiling and pointing dowanrds.
+         * The switch is mounted to the ceiling and pointing downwards.
          */
         CEILING;
     }
diff --git a/src/main/java/org/bukkit/block/data/type/CommandBlock.java b/src/main/java/org/bukkit/block/data/type/CommandBlock.java
index 9a7122c907308e4e0a4d0eab815df16899503c19..3b1dab4c1c38477fbe651382f37fdb042ce67cd1 100644
--- a/src/main/java/org/bukkit/block/data/type/CommandBlock.java
+++ b/src/main/java/org/bukkit/block/data/type/CommandBlock.java
@@ -4,7 +4,7 @@ import org.bukkit.block.data.Directional;
 
 /**
  * 'conditional' denotes whether this command block is conditional or not, i.e.
- * will only execute if the preceeding command block also executed successfully.
+ * will only execute if the preceding command block also executed successfully.
  */
 public interface CommandBlock extends Directional {
 
diff --git a/src/main/java/org/bukkit/block/data/type/Gate.java b/src/main/java/org/bukkit/block/data/type/Gate.java
index 494f97d47b52bc99b13748c1b57730fbd37d8f51..ebc98607b93294847f95e793304bc5d2528de2a3 100644
--- a/src/main/java/org/bukkit/block/data/type/Gate.java
+++ b/src/main/java/org/bukkit/block/data/type/Gate.java
@@ -5,7 +5,7 @@ import org.bukkit.block.data.Openable;
 import org.bukkit.block.data.Powerable;
 
 /**
- * 'in_wall" indicates if the fence gate is attached to a wall, and if true the
+ * 'in_wall' indicates if the fence gate is attached to a wall, and if true the
  * texture is lowered by a small amount to blend in better.
  */
 public interface Gate extends Directional, Openable, Powerable {
diff --git a/src/main/java/org/bukkit/block/data/type/Switch.java b/src/main/java/org/bukkit/block/data/type/Switch.java
index be06f8db02ca41d5cc3a5dc02951ad27e3cc8f9d..d91a07c7bcb36b3810bb2db89afef1eefd89253d 100644
--- a/src/main/java/org/bukkit/block/data/type/Switch.java
+++ b/src/main/java/org/bukkit/block/data/type/Switch.java
@@ -21,7 +21,7 @@ public interface Switch extends Directional, FaceAttachable, Powerable {
      * Sets the value of the 'face' property.
      *
      * @param face the new 'face' value
-     * @deprecated use {@link #getAttachedFace()}
+     * @deprecated use {@link #setAttachedFace(AttachedFace)}
      */
     @Deprecated
     void setFace(@NotNull Face face);
@@ -42,7 +42,7 @@ public interface Switch extends Directional, FaceAttachable, Powerable {
          */
         WALL,
         /**
-         * The switch is mounted to the ceiling and pointing dowanrds.
+         * The switch is mounted to the ceiling and pointing downwards.
          */
         CEILING;
     }
diff --git a/src/main/java/org/bukkit/entity/ArmorStand.java b/src/main/java/org/bukkit/entity/ArmorStand.java
index 91fc11dda99de506be83d40df8929bf7cd8e8d85..7dc631ebd009f5f5c3ac1699c3f3515c47609c05 100644
--- a/src/main/java/org/bukkit/entity/ArmorStand.java
+++ b/src/main/java/org/bukkit/entity/ArmorStand.java
@@ -360,5 +360,8 @@ public interface ArmorStand extends LivingEntity {
      * @param move {@code true} if this armour stand can move, {@code false} otherwise
      */
     void setCanMove(boolean move);
+
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Arrow.java b/src/main/java/org/bukkit/entity/Arrow.java
index 8eb0cf31b1ce6d714a14cf65bbb117ff163ae2f3..8e57082e8b19a2fd9625816c2ea4a90d41f78ca5 100644
--- a/src/main/java/org/bukkit/entity/Arrow.java
+++ b/src/main/java/org/bukkit/entity/Arrow.java
@@ -93,7 +93,7 @@ public interface Arrow extends AbstractArrow {
      * Removes a custom potion effect from this arrow.
      *
      * @param type the potion effect type to remove
-     * @return true if the an effect was removed as a result of this call
+     * @return true if the effect was removed as a result of this call
      * @throws IllegalArgumentException if this operation would leave the Arrow
      * in a state with no Custom Effects and PotionType.UNCRAFTABLE
      */
diff --git a/src/main/java/org/bukkit/entity/EnderDragon.java b/src/main/java/org/bukkit/entity/EnderDragon.java
index 0449664d7cd0c52ac34d2101110f1ab42070257c..57f8e7bf4c7b4c4a4e793cfd5d7db74384d8b1b5 100644
--- a/src/main/java/org/bukkit/entity/EnderDragon.java
+++ b/src/main/java/org/bukkit/entity/EnderDragon.java
@@ -30,7 +30,7 @@ public interface EnderDragon extends ComplexLivingEntity, Boss, Mob, Enemy {
          */
         FLY_TO_PORTAL,
         /**
-         * The dragon will land on on the portal. If the dragon is not near
+         * The dragon will land on the portal. If the dragon is not near
          * the portal, it will fly to it before mounting.
          */
         LAND_ON_PORTAL,
diff --git a/src/main/java/org/bukkit/entity/EntityCategory.java b/src/main/java/org/bukkit/entity/EntityCategory.java
index fd960f20c79f721575c9bd4074a5ca9ab6b796b1..3e2ae87c806ce439d6c8848deecda48a28dbed96 100644
--- a/src/main/java/org/bukkit/entity/EntityCategory.java
+++ b/src/main/java/org/bukkit/entity/EntityCategory.java
@@ -23,7 +23,7 @@ public enum EntityCategory {
      *   <li>Are subject to burning in daylight (though not all).
      *   <li>Sink in water (except {@link Drowned}, {@link Phantom Phantoms}
      *   and {@link Wither Withers}).
-     *   <li>Take additional damage from {@link Enchantment#DAMAGE_UNDEAD}.
+     *   <li>Take additional damage from {@link Enchantment#SMITE}.
      *   <li>Are ignored by {@link Wither Withers}.
      * </ul>
      */
@@ -31,8 +31,8 @@ public enum EntityCategory {
     /**
      * Entities of the arthropod family. These creatures:
      * <ul>
-     *   <li>Take additional damage and receive {@link PotionEffectType#SLOW}
-     *   from {@link Enchantment#DAMAGE_ARTHROPODS}.
+     *   <li>Take additional damage and receive {@link PotionEffectType#SLOWNESS}
+     *   from {@link Enchantment#BANE_OF_ARTHROPODS}.
      *   <li>Are immune to {@link PotionEffectType#POISON} if they are spiders.
      * </ul>
      */
diff --git a/src/main/java/org/bukkit/entity/HumanEntity.java b/src/main/java/org/bukkit/entity/HumanEntity.java
index f2faa8b9a7da1c9af26f494ae82ae5372dcc4805..411dbbd8046a3157747713fea9ae19eca113e9b7 100644
--- a/src/main/java/org/bukkit/entity/HumanEntity.java
+++ b/src/main/java/org/bukkit/entity/HumanEntity.java
@@ -22,6 +22,11 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface HumanEntity extends LivingEntity, AnimalTamer, InventoryHolder {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
+    // Paper end
+
     /**
      * Returns the name of this player
      *
diff --git a/src/main/java/org/bukkit/entity/ItemFrame.java b/src/main/java/org/bukkit/entity/ItemFrame.java
index b688b3856cb3068a539fcecfbfa113f8ab4160a9..c275b881cbd11307a6dcc7190d7a7d4063000ad8 100644
--- a/src/main/java/org/bukkit/entity/ItemFrame.java
+++ b/src/main/java/org/bukkit/entity/ItemFrame.java
@@ -75,7 +75,7 @@ public interface ItemFrame extends Hanging {
     public void setRotation(@NotNull Rotation rotation) throws IllegalArgumentException;
 
     /**
-     * Returns whether the item frame is be visible or not.
+     * Returns whether the item frame is visible or not.
      *
      * @return whether the item frame is visible or not
      */
diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
index 2926fa6071bc7640cc10280b5c3962b0ce7686f1..4f63988848443aff55619bc12ef12c925642a3f9 100644
--- a/src/main/java/org/bukkit/entity/Mob.java
+++ b/src/main/java/org/bukkit/entity/Mob.java
@@ -9,6 +9,10 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface Mob extends LivingEntity, Lootable {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@org.jetbrains.annotations.NotNull EntityEquipment getEquipment();
+    // Paper end
     /**
      * Instructs this Mob to set the specified LivingEntity as its target.
      * <p>
diff --git a/src/main/java/org/bukkit/entity/PigZombie.java b/src/main/java/org/bukkit/entity/PigZombie.java
index ae9eaaa8e38e1d9dfc459926c7fc51ddb89de84a..b2ec535bb1b0ce0c114ddd7638b90218b05cd835 100644
--- a/src/main/java/org/bukkit/entity/PigZombie.java
+++ b/src/main/java/org/bukkit/entity/PigZombie.java
@@ -44,8 +44,6 @@ public interface PigZombie extends Zombie {
 
     /**
      * <b>Not applicable to this entity</b>
-     *
-     * @return UnsuppotedOperationException
      */
     @Override
     public int getConversionTime();
diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
index 5d47d3089f244b146aab63d54f5aefba51e481a9..383d12b1ffc76bc8f9100a71027ac9e25e4a3742 100644
--- a/src/main/java/org/bukkit/entity/Player.java
+++ b/src/main/java/org/bukkit/entity/Player.java
@@ -327,15 +327,15 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Saves the players current location, health, inventory, motion, and
-     * other information into the username.dat file, in the world/player
-     * folder
+     * other information into the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      */
     public void saveData();
 
     /**
      * Loads the players current location, health, inventory, motion, and
-     * other information from the username.dat file, in the world/player
-     * folder.
+     * other information from the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      * <p>
      * Note: This will overwrite the players current inventory, health,
      * motion, etc, with the state from the saved dat file.
@@ -570,7 +570,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
     /**
      * Plays an effect to just this player.
      *
-     * @param <T> the data based based on the type of the effect
+     * @param <T> the data based on the type of the effect
      * @param loc the location to play the effect at
      * @param effect the {@link Effect}
      * @param data a data bit needed for some effects
@@ -921,7 +921,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *
      * Use supplied alternative character to the section symbol to represent legacy color codes.
      *
-     * @param alternateChar Alternate symbol such as '&'
+     * @param alternateChar Alternate symbol such as '&amp;'
      * @param message The message to send
      * @deprecated use {@link #sendActionBar(net.kyori.adventure.text.Component)}
      */
@@ -1387,7 +1387,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Allows this player to see a player that was previously hidden. If
-     * another another plugin had hidden the player too, then the player will
+     * another plugin had hidden the player too, then the player will
      * remain hidden until the other plugin calls this method too.
      *
      * @param plugin Plugin that wants to show the player
@@ -1416,7 +1416,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Allows this player to see an entity that was previously hidden. If
-     * another another plugin had hidden the entity too, then the entity will
+     * another plugin had hidden the entity too, then the entity will
      * remain hidden until the other plugin calls this method too.
      *
      * @param plugin Plugin that wants to show the entity
diff --git a/src/main/java/org/bukkit/entity/Slime.java b/src/main/java/org/bukkit/entity/Slime.java
index a5ad3250cebfeb302c58e0bfd6db1295913c927e..bfac874840cf1f36afba16ae4d176c5821a68cfb 100644
--- a/src/main/java/org/bukkit/entity/Slime.java
+++ b/src/main/java/org/bukkit/entity/Slime.java
@@ -11,6 +11,16 @@ public interface Slime extends Mob, Enemy {
     public int getSize();
 
     /**
+     * Setting the size of the slime (regardless of previous size)
+     * will set the following attributes:
+     * <ul>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_MAX_HEALTH}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_MOVEMENT_SPEED}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_ATTACK_DAMAGE}</li>
+     * </ul>
+     * to their per-size defaults and heal the
+     * slime to its max health (assuming it's alive).
+     *
      * @param sz The new size of the slime.
      */
     public void setSize(int sz);
diff --git a/src/main/java/org/bukkit/entity/Sniffer.java b/src/main/java/org/bukkit/entity/Sniffer.java
index af5110b4160979c39cc1e5de6fa3bd7957b21403..15a0a733b0e5804655b5957cbf20831290d52a08 100644
--- a/src/main/java/org/bukkit/entity/Sniffer.java
+++ b/src/main/java/org/bukkit/entity/Sniffer.java
@@ -12,8 +12,6 @@ public interface Sniffer extends Animals {
 
     /**
      * Gets the locations explored by the sniffer.
-     * <br>
-     * <b>Note:</b> the returned locations use sniffer's current world.
      *
      * @return a collection of locations
      */
@@ -22,9 +20,6 @@ public interface Sniffer extends Animals {
 
     /**
      * Remove a location of the explored locations.
-     * <br>
-     * <b>Note:</b> the location must be in the sniffer's current world for this
-     * method to have any effect.
      *
      * @param location the location to remove
      * @see #getExploredLocations()
diff --git a/src/main/java/org/bukkit/entity/Villager.java b/src/main/java/org/bukkit/entity/Villager.java
index fb4c6f92c7c16ff8cdc0a054a270b41d78dfcdde..a6e57f8ad3f09d05ca61c824d128221528f7a96d 100644
--- a/src/main/java/org/bukkit/entity/Villager.java
+++ b/src/main/java/org/bukkit/entity/Villager.java
@@ -225,7 +225,7 @@ public interface Villager extends AbstractVillager {
          */
         public static final Profession NITWIT = getProfession("nitwit");
         /**
-         * Sheperd profession. Wears a brown robe. Shepherds primarily trade for
+         * Shepherd profession. Wears a brown robe. Shepherds primarily trade for
          * wool items, and shears.
          */
         public static final Profession SHEPHERD = getProfession("shepherd");
diff --git a/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java b/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
index 44f7f6939a27b9a0a796d91eac4b7c97ec90a643..641c71ab66bd2499b35cf3c1d533fd105d096e10 100644
--- a/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
@@ -7,7 +7,9 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a block explodes
+ * Called when a block explodes interacting with blocks. The
+ * event isn't called if the {@link org.bukkit.GameRule#MOB_GRIEFING}
+ * is disabled as no block interaction will occur.
  */
 public class BlockExplodeEvent extends BlockEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java b/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
index ff20d0768aed1732dcef8989c62e19c01e8ec70a..a4525c1ac5e6aa0130358739db35fbb732476e33 100644
--- a/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
@@ -114,7 +114,7 @@ public class BlockPlaceEvent extends BlockEvent implements Cancellable {
 
     /**
      * Gets the value whether the player would be allowed to build here.
-     * Defaults to spawn if the server was going to stop them (such as, the
+     * Defaults to false if the server was going to stop them (such as, the
      * player is in Spawn). Note that this is an entirely different check
      * than BLOCK_CANBUILD, as this refers to a player, not universe-physics
      * rule like cactus on dirt.
diff --git a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
index 2ff1b1308571d8f8056d3359e8a8ba4a589c3726..e9a6e5be5f33a342f7e5c496f0f1c64b2f302ace 100644
--- a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
+++ b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
@@ -80,7 +80,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
     /**
      * Get a list of available {@link EnchantmentOffer} for the player. You can
      * modify the values to change the available offers for the player. An offer
-     * may be null, if there isn't a enchantment offer at a specific slot. There
+     * may be null, if there isn't an enchantment offer at a specific slot. There
      * are 3 slots in the enchantment table available to modify.
      *
      * @return list of available enchantment offers
diff --git a/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java b/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
index a37febd0d4dd5b733e9ee72628fdf9395fec4367..9cee218b9ee14688356f16b1f58512186286e7e9 100644
--- a/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
+++ b/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
@@ -8,7 +8,7 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a lingering potion applies it's effects. Happens
+ * Called when a lingering potion applies its effects. Happens
  * once every 5 ticks
  */
 public class AreaEffectCloudApplyEvent extends EntityEvent implements Cancellable {
diff --git a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
index e9de00e9e434d36117a672fa9fbfc7c52f284b67..4065432c884324b107d04f4ccd486085b0c440e7 100644
--- a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+++ b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
@@ -154,11 +154,12 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
          */
         DROWNED,
         /**
-         * When an cow is spawned by shearing a mushroom cow
+         * When a cow is spawned by shearing a mushroom cow
          */
         SHEARED,
         /**
-         * When eg an effect cloud is spawned as a result of a creeper exploding
+         * When an entity is spawned as a result of an explosion. Like an area effect cloud from
+         * a creeper or a dragon fireball.
          */
         EXPLOSION,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java b/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
index 10d0e18dfd423b108fe381e8142867eb10399359..099efafa14c10910e4ed04abb1823f0c1a96b6a6 100644
--- a/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
@@ -9,7 +9,9 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when an entity explodes
+ * Called when an entity explodes interacting with blocks. The
+ * event isn't called if the {@link org.bukkit.GameRule#MOB_GRIEFING}
+ * is disabled as no block interaction will occur.
  */
 public class EntityExplodeEvent extends EntityEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java b/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
index c866df03d66dd8724e12c7353da4cf144c70b2c8..94ee5a3354722aa5d825da727b7b7071fdc6bacc 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
@@ -7,7 +7,7 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Thrown when a entity picks an item up from the ground
+ * Thrown when an entity picks an item up from the ground
  */
 public class EntityPickupItemEvent extends EntityEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java b/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
index 327876e0ad7dcfeb71d9d22afe1c04bcd71c3bf9..71d664dd89995f088c47d17b38547d530319470c 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
@@ -11,7 +11,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * Triggered when a entity is created in the world by a player "placing" an item
+ * Triggered when an entity is created in the world by a player "placing" an item
  * on a block.
  * <br>
  * Note that this event is currently only fired for four specific placements:
diff --git a/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java b/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
index 01c5e8b71338fbb4b1605e45bf2a2e705188f6b5..c9f395064656dd0126410eb3c6e197baa450c063 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
@@ -133,7 +133,7 @@ public class EntityPotionEffectEvent extends EntityEvent implements Cancellable
     public enum Action {
 
         /**
-         * When the potion effect is added because the entity didn't have it's
+         * When the potion effect is added because the entity didn't have its
          * type.
          */
         ADDED,
@@ -238,7 +238,7 @@ public class EntityPotionEffectEvent extends EntityEvent implements Cancellable
          */
         SPIDER_SPAWN,
         /**
-         * When the entity gets effects from a totem item saving it's life.
+         * When the entity gets effects from a totem item saving its life.
          */
         TOTEM,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java b/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
index d51d2ec1d04d9ea8a25a70d0d856f2355ebfcb4a..7ecff9fcee19fc94be784474fea620e5dd434731 100644
--- a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
@@ -105,7 +105,7 @@ public class EntityRegainHealthEvent extends EntityEvent implements Cancellable
          */
         SATIATED,
         /**
-         * When a player regains health from eating consumables
+         * When an animal regains health from eating consumables
          */
         EATING,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java b/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
index dee186e99463a56394bbc2039d1e763d109125b9..c6e4d69eecd2789b1d78fe99fe590932e9758ba1 100644
--- a/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
@@ -156,7 +156,7 @@ public class EntityTargetEvent extends EntityEvent implements Cancellable {
         FOLLOW_LEADER,
         /**
          * When another entity tempts this entity by having a desired item such
-         * as wheat in it's hand.
+         * as wheat in its hand.
          */
         TEMPT,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java b/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
index c17ff41a688b2cbd877cda25d4ec033ac8ef5524..bd67b7cba78b9bbdd82a5a40048e658a979e3108 100644
--- a/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
+++ b/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
@@ -10,8 +10,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Stores all data related to the bartering interaction with a piglin.
  *
- * This event can be triggered by a piglin picking up an item that's on its
- * bartering list.
+ * Called when a piglin completes a barter.
  */
 public class PiglinBarterEvent extends EntityEvent implements Cancellable {
 
diff --git a/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java b/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
index 79797a2be7fb139d528116d34d13e51d39b96e56..0921484e921dbd200725b9298f655720618b5362 100644
--- a/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
@@ -92,7 +92,7 @@ public class InventoryClickEvent extends InventoryInteractEvent {
     /**
      * Gets the ItemStack currently in the clicked slot.
      *
-     * @return the item in the clicked
+     * @return the item in the clicked slot
      */
     @Nullable
     public ItemStack getCurrentItem() {
diff --git a/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java b/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
index 9013d043503d175004ad276799e5935b7fa59dc4..ceae092eb782698803c6c3df41267dde20ba62b2 100644
--- a/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
@@ -7,7 +7,7 @@ import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Represents a player related inventory event
+ * Called when a player opens an inventory
  */
 public class InventoryOpenEvent extends InventoryEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java b/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
index 6782024735a885ba0b1b4dba4a576740c1410366..8977f7609431c3c46324a82de84d4a32f4b71c57 100644
--- a/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
@@ -24,6 +24,20 @@ public class PrepareAnvilEvent extends PrepareInventoryResultEvent {
         return (AnvilInventory) super.getInventory();
     }
 
+    /**
+     * {@inheritDoc}
+     *
+     * <p>
+     * Note: by default custom recipes in anvil are disabled
+     * you should define a repair cost on the anvil inventory
+     * greater or equals to zero in order to allow that.
+     *
+     * @param result result item
+     */
+    public void setResult(@Nullable ItemStack result) {
+        super.setResult(result);
+    }
+
     @NotNull
     @Override
     public HandlerList getHandlers() {
diff --git a/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java b/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
index 4c2102a11c3d682d98f0db4ccafa35231e66bcdd..ca238af544764273b9cd4cf3587e8632031c9ede 100644
--- a/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
+++ b/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
@@ -5,8 +5,9 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a player takes action on a resource pack request sent via
- * {@link Player#setResourcePack(java.lang.String)}.
+ * Called when a player takes action on a resource pack request.
+ * @see Player#setResourcePack(String, String)
+ * @see Player#setResourcePack(String, String, boolean)
  */
 public class PlayerResourcePackStatusEvent extends PlayerEvent {
 
diff --git a/src/main/java/org/bukkit/generator/ChunkGenerator.java b/src/main/java/org/bukkit/generator/ChunkGenerator.java
index 08d656ee57b080e07b7b7d97c9551fb0a0e3e94b..82d8fe3be9ff6914b44872462c3827123459735d 100644
--- a/src/main/java/org/bukkit/generator/ChunkGenerator.java
+++ b/src/main/java/org/bukkit/generator/ChunkGenerator.java
@@ -627,7 +627,7 @@ public abstract class ChunkGenerator {
          * Get the biome at x, y, z within chunk being generated
          *
          * @param x the x location in the chunk from 0-15 inclusive
-         * @param y the y location in the chunk from minimum (inclusive) -
+         * @param y the y location in the chunk from minHeight (inclusive) -
          * maxHeight (exclusive)
          * @param z the z location in the chunk from 0-15 inclusive
          * @return Biome value
diff --git a/src/main/java/org/bukkit/inventory/EntityEquipment.java b/src/main/java/org/bukkit/inventory/EntityEquipment.java
index d5b50a4a954fed35d37f03f1a277cc173ca106df..c69904f3ee7f3a41d6cebcd401abf8385dfbf868 100644
--- a/src/main/java/org/bukkit/inventory/EntityEquipment.java
+++ b/src/main/java/org/bukkit/inventory/EntityEquipment.java
@@ -37,9 +37,23 @@ public interface EntityEquipment {
     public ItemStack getItem(@NotNull EquipmentSlot slot);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their main hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInMainHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInMainHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -61,9 +75,23 @@ public interface EntityEquipment {
     void setItemInMainHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their off hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInOffHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInOffHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -85,7 +113,21 @@ public interface EntityEquipment {
     void setItemInOffHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInHand(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return the currently held item
      * @see #getItemInMainHand()
@@ -110,11 +152,24 @@ public interface EntityEquipment {
     void setItemInHand(@Nullable ItemStack stack);
 
     /**
-     * Gets a copy of the helmet currently being worn by the entity
+     * Gets the helmet currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getHelmet(); // will return a mirror
+     * } else {
+     *     equipment.getHelmet(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The helmet being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getHelmet();
 
     /**
@@ -133,11 +188,24 @@ public interface EntityEquipment {
     void setHelmet(@Nullable ItemStack helmet, boolean silent);
 
     /**
-     * Gets a copy of the chest plate currently being worn by the entity
+     * Gets the chest plate currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getChestplate(); // will return a mirror
+     * } else {
+     *     equipment.getChestplate(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The chest plate being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getChestplate();
 
     /**
@@ -156,11 +224,24 @@ public interface EntityEquipment {
     void setChestplate(@Nullable ItemStack chestplate, boolean silent);
 
     /**
-     * Gets a copy of the leggings currently being worn by the entity
+     * Gets the leggings currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getLeggings(); // will return a mirror
+     * } else {
+     *     equipment.getLeggings(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The leggings being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getLeggings();
 
     /**
@@ -179,11 +260,24 @@ public interface EntityEquipment {
     void setLeggings(@Nullable ItemStack leggings, boolean silent);
 
     /**
-     * Gets a copy of the boots currently being worn by the entity
+     * Gets the boots currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getBoots(); // will return a mirror
+     * } else {
+     *     equipment.getBoots(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The boots being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getBoots();
 
     /**
@@ -202,12 +296,25 @@ public interface EntityEquipment {
     void setBoots(@Nullable ItemStack boots, boolean silent);
 
     /**
-     * Gets a copy of all worn armor
+     * Gets all worn armor
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getArmorContents(); // will return an array of mirror
+     * } else {
+     *     equipment.getArmorContents(); // will return an array of copies
+     * }
+     * }</pre>
      *
      * @return The array of worn armor. Individual items may be null.
      */
-    @NotNull
-    ItemStack[] getArmorContents();
+    @org.bukkit.UndefinedNullability("not null elements for entities, nullable elements for players") ItemStack @NotNull [] getArmorContents(); // Paper
 
     /**
      * Sets the entities armor to the provided array of ItemStacks
diff --git a/src/main/java/org/bukkit/inventory/ItemFlag.java b/src/main/java/org/bukkit/inventory/ItemFlag.java
index 42fcc31147934fd4ed6484b0729e938e7ae2f8e2..4e637420b9a39b822be19367a16da93f236549b3 100644
--- a/src/main/java/org/bukkit/inventory/ItemFlag.java
+++ b/src/main/java/org/bukkit/inventory/ItemFlag.java
@@ -35,7 +35,7 @@ public enum ItemFlag {
      */
     HIDE_DYE,
     /**
-     * Setting to show/hide armor trim from leather armor.
+     * Setting to show/hide armor trim from armor.
      */
     HIDE_ARMOR_TRIM;
 }
diff --git a/src/main/java/org/bukkit/inventory/PlayerInventory.java b/src/main/java/org/bukkit/inventory/PlayerInventory.java
index 62fbd7f6d8195bebcab7f704a0a485a1bbeca26c..5461f7fa75f5a065bb333b4a113640b5fe1e3825 100644
--- a/src/main/java/org/bukkit/inventory/PlayerInventory.java
+++ b/src/main/java/org/bukkit/inventory/PlayerInventory.java
@@ -158,7 +158,7 @@ public interface PlayerInventory extends Inventory {
     public void setBoots(@Nullable ItemStack boots);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their main hand.
      *
      * @return the currently held item
@@ -174,7 +174,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInMainHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their off hand.
      *
      * @return the currently held item
@@ -190,7 +190,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInOffHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      *
      * @return the currently held item
      * @see #getItemInMainHand()
diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index a9dbb11148e5bdf3e6c251bc98b6a8295aceba2f..e92de5ca8bd48723a493495db3ca2e2f5b55fab5 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -29,7 +29,6 @@ public class ShapedRecipe implements Recipe, Keyed {
      * @param result The item you want the recipe to create.
      * @see ShapedRecipe#shape(String...)
      * @see ShapedRecipe#setIngredient(char, ItemType)
-     * @see ShapedRecipe#setIngredient(char, MaterialData)
      * @see ShapedRecipe#setIngredient(char, RecipeChoice)
      * @deprecated Recipes must have keys. Use {@link #ShapedRecipe(NamespacedKey, ItemStack)}
      * instead.
@@ -50,7 +49,6 @@ public class ShapedRecipe implements Recipe, Keyed {
      * @param result The item you want the recipe to create.
      * @see ShapedRecipe#shape(String...)
      * @see ShapedRecipe#setIngredient(char, ItemType)
-     * @see ShapedRecipe#setIngredient(char, MaterialData)
      * @see ShapedRecipe#setIngredient(char, RecipeChoice)
      */
     public ShapedRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result) {
diff --git a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index 94393a1f0d19a58a1029f9c31193b3d9279c5ef0..69a25d05efcc96f8b3d3b5455e571259e5af2dab 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -37,9 +37,8 @@ public class ShapelessRecipe implements Recipe, Keyed {
      * @param key the unique recipe key
      * @param result The item you want the recipe to create.
      * @see ShapelessRecipe#addIngredient(ItemType)
-     * @see ShapelessRecipe#addIngredient(MaterialData)
      * @see ShapelessRecipe#addIngredient(int,ItemType)
-     * @see ShapelessRecipe#addIngredient(int,MaterialData)
+     * @see ShapelessRecipe#addIngredient(RecipeChoice)
      */
     public ShapelessRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result) {
         Preconditions.checkArgument(result.getType() != ItemType.AIR, "Recipe must have non-AIR result.");
@@ -147,7 +146,7 @@ public class ShapelessRecipe implements Recipe, Keyed {
 
     /**
      * Removes multiple instances of an ingredient from the list. If there are
-     * less instances then specified, all will be removed. Only removes exact
+     * fewer instances than specified, all will be removed. Only removes exact
      * matches, with a data value of 0.
      *
      * @param count The number of copies to remove.
diff --git a/src/main/java/org/bukkit/inventory/SmithingRecipe.java b/src/main/java/org/bukkit/inventory/SmithingRecipe.java
index af04071d37e70b8cc9837d57477c8493be8afb9f..582671a0a94d47302c0fdc572d486282c32f786f 100644
--- a/src/main/java/org/bukkit/inventory/SmithingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/SmithingRecipe.java
@@ -21,7 +21,9 @@ public class SmithingRecipe implements Recipe, Keyed {
      * @param result The item you want the recipe to create.
      * @param base The base ingredient
      * @param addition The addition ingredient
+     * @deprecated use {@link SmithingTrimRecipe} or {@link SmithingTransformRecipe}
      */
+    @Deprecated(forRemoval = true) // Paper
     public SmithingRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result, @NotNull RecipeChoice base, @NotNull RecipeChoice addition) {
         this.key = key;
         this.result = result;
diff --git a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
index 8df05b404eb1bcbe1bf358b8cb34c46f25ceeba1..0de3c34c67b8c37a3c7ba8bcec4404ed4ef5019e 100644
--- a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
@@ -33,7 +33,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Create a cooking recipe to craft the specified ItemStack.
+     * Create a Stonecutting recipe to craft the specified ItemStack.
      *
      * @param key The unique recipe key
      * @param result The item you want the recipe to create.
@@ -47,7 +47,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Sets the input of this cooking recipe.
+     * Sets the input of this Stonecutting recipe.
      *
      * @param input The input item type.
      * @return The changed recipe, so you can chain calls.
@@ -69,7 +69,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Sets the input of this cooking recipe.
+     * Sets the input of this Stonecutting recipe.
      *
      * @param input The input choice.
      * @return The changed recipe, so you can chain calls.
diff --git a/src/main/java/org/bukkit/inventory/meta/ItemMeta.java b/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
index 049c70c935fd7a781280d223f74bbbf87223f505..f78714c2a6d9da162c9802552984cbfad76ff728 100644
--- a/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
@@ -305,7 +305,7 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
     /**
      * Return an immutable copy of all {@link Attribute}s and their
      * {@link AttributeModifier}s for a given {@link EquipmentSlot}.<br>
-     * Any {@link AttributeModifier} that does have have a given
+     * Any {@link AttributeModifier} that does have a given
      * {@link EquipmentSlot} will be returned. This is because
      * AttributeModifiers without a slot are active in any slot.<br>
      * If there are no attributes set for the given slot, an empty map
diff --git a/src/main/java/org/bukkit/loot/LootContext.java b/src/main/java/org/bukkit/loot/LootContext.java
index 71b7aa9d675e1714e286e6fd4015ead036d912e0..b35dba42069f771db8727bf98f9d17aff9d6094e 100644
--- a/src/main/java/org/bukkit/loot/LootContext.java
+++ b/src/main/java/org/bukkit/loot/LootContext.java
@@ -54,7 +54,7 @@ public final class LootContext {
 
     /**
      * Represents the
-     * {@link org.bukkit.enchantments.Enchantment#LOOT_BONUS_MOBS} the
+     * {@link org.bukkit.enchantments.Enchantment#LOOTING} the
      * {@link #getKiller()} entity has on their equipped item.
      *
      * This value is only set via
@@ -124,7 +124,7 @@ public final class LootContext {
         }
 
         /**
-         * Set the {@link org.bukkit.enchantments.Enchantment#LOOT_BONUS_MOBS}
+         * Set the {@link org.bukkit.enchantments.Enchantment#LOOTING}
          * level equivalent to use when generating loot. Values less than or
          * equal to 0 will force the {@link LootTable} to only return a single
          * {@link org.bukkit.inventory.ItemStack} per pool.
diff --git a/src/main/java/org/bukkit/scoreboard/Objective.java b/src/main/java/org/bukkit/scoreboard/Objective.java
index 86a0a6f9e8487d6dfaf60876ace3dcc9b4722826..571b43c2809d2b248feebc7decba6017a67c8aee 100644
--- a/src/main/java/org/bukkit/scoreboard/Objective.java
+++ b/src/main/java/org/bukkit/scoreboard/Objective.java
@@ -88,7 +88,7 @@ public interface Objective {
      *
      * @return true if scores are modifiable
      * @throws IllegalStateException if this objective has been unregistered
-     * @see Criterias#HEALTH
+     * @see Criteria#HEALTH
      */
     boolean isModifiable() throws IllegalStateException;
 
diff --git a/src/main/java/org/bukkit/scoreboard/Team.java b/src/main/java/org/bukkit/scoreboard/Team.java
index 4d625f79ba2e3fe074feade98f7c1bc2798cb82e..937a28638c251509ebeb254178a4583fe03c52d0 100644
--- a/src/main/java/org/bukkit/scoreboard/Team.java
+++ b/src/main/java/org/bukkit/scoreboard/Team.java
@@ -277,7 +277,7 @@ public interface Team {
      * Gets the Set of entries on the team
      *
      * @return entries on the team
-     * @throws IllegalStateException if this entries has been unregistered\
+     * @throws IllegalStateException if this team has been unregistered
      */
     @NotNull
     Set<String> getEntries() throws IllegalStateException;
diff --git a/src/main/java/org/bukkit/util/BoundingBox.java b/src/main/java/org/bukkit/util/BoundingBox.java
index 9883983c33fcff0f4c1e23867adafa436e2ed96f..5017b73bcec0d4d5256d89db14201c03829dc981 100644
--- a/src/main/java/org/bukkit/util/BoundingBox.java
+++ b/src/main/java/org/bukkit/util/BoundingBox.java
@@ -358,7 +358,7 @@ public class BoundingBox implements Cloneable, ConfigurationSerializable {
      * <p>
      * Negative values will shrink the bounding box in the corresponding
      * direction. Shrinking will be limited to the point where the affected
-     * opposite faces would meet if the they shrank at uniform speeds.
+     * opposite faces would meet if they shrank at uniform speeds.
      *
      * @param negativeX the amount of expansion in the negative x direction
      * @param negativeY the amount of expansion in the negative y direction
diff --git a/src/main/java/org/bukkit/util/CachedServerIcon.java b/src/main/java/org/bukkit/util/CachedServerIcon.java
index 612958a331575d1da2715531ebdf6b1168f2e860..9a7768d41270714d4a1c89b4dcb436cc66f57545 100644
--- a/src/main/java/org/bukkit/util/CachedServerIcon.java
+++ b/src/main/java/org/bukkit/util/CachedServerIcon.java
@@ -5,7 +5,7 @@ import org.bukkit.event.server.ServerListPingEvent;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * This is a cached version of a server-icon. It's internal representation
+ * This is a cached version of a server-icon. Its internal representation
  * and implementation is undefined.
  *
  * @see Server#getServerIcon()