Add apiVersion to ViaAPI, some jd

api/src/main/java/com/viaversion/viaversion/api/ViaAPI.java

@@ -45,6 +45,16 @@ import java.util.UUID;
  */
 public interface ViaAPI<T> {
 
+    /**
+     * Returns the API version incremented with meaningful API changes.
+     * This includes breaking changes to existing API and larger additions.
+     *
+     * @return API version incremented with meaningful API changes
+     */
+    default int apiVersion() {
+        return 1;
+    }
+
     /**
      * Returns the server's protocol version info.
      *

api/src/main/java/com/viaversion/viaversion/api/minecraft/chunks/ChunkSection.java

@@ -181,7 +181,7 @@ public interface ChunkSection {
 
     /**
      * Returns whether this section holds light data.
-     * Only true for &lt 1.14 clients.
+     * Only true for < 1.14 chunks.
      *
      * @return whether this section holds light data
      */
@@ -189,6 +189,12 @@ public interface ChunkSection {
         return getLight() != null;
     }
 
+    /**
+     * Returns the light of the chunk section.
+     * Only present for < 1.14 chunks, otherwise sent separately.
+     *
+     * @return chunk section light if present
+     */
     @Nullable ChunkSectionLight getLight();
 
     void setLight(@Nullable ChunkSectionLight light);

api/src/main/java/com/viaversion/viaversion/api/protocol/AbstractProtocol.java

@@ -336,7 +336,7 @@ public abstract class AbstractProtocol<C1 extends ClientboundPacketType, C2 exte
         return "Protocol:" + getClass().getSimpleName();
     }
 
-    public static class Packet {
+    public static final class Packet {
         private final State state;
         private final int packetId;
 
@@ -374,7 +374,7 @@ public abstract class AbstractProtocol<C1 extends ClientboundPacketType, C2 exte
         }
     }
 
-    public static class ProtocolPacket {
+    public static final class ProtocolPacket {
         private final State state;
         private final int oldID;
         private final int newID;