Improve java docs.

NCPCore/src/main/java/fr/neatmonster/nocheatplus/logging/BukkitLogManager.java

@@ -200,7 +200,8 @@ public class BukkitLogManager extends AbstractLogManager implements INotifyReloa
     }
 
     /**
-     * Necessary logging to a primary thread task (TickTask).
+     * Necessary logging to a primary thread task (TickTask) or asynchronously.
+     * This can be called multiple times without causing damage.
      */
     public void startTasks() {
         // TODO: Schedule / hide (redundant calls mean no harm, at present). 

NCPCore/src/main/java/fr/neatmonster/nocheatplus/logging/details/BukkitLogNodeDispatcher.java

@@ -32,6 +32,10 @@ public class BukkitLogNodeDispatcher extends AbstractLogNodeDispatcher { // TODO
         this.plugin = plugin;
     }
 
+    /**
+     * Necessary logging to a primary thread task (TickTask) or asynchronously.
+     * This can be called multiple times without causing damage.
+     */
     public void startTasks() {
         // TODO: This is a temporary solution. Needs on-demand scheduling [or a wrapper task].
         TickTask.addTickListener(taskPrimary);

NCPCore/src/main/java/fr/neatmonster/nocheatplus/utilities/TickTask.java

@@ -183,6 +183,7 @@ public class TickTask implements Runnable {
      * <li>Thread safe.</li>
      * <li>Does not work if the TickTask is locked.</li>
      * <li>For OnDemandTickListenerS, setRegistered(true) will get called if not locked.</li>
+     * <li>Will not add the same instance twice, but will call setRegistered each time for OnDemandTickListener instances.</li>
      * @param listener
      */
     public static void addTickListener(TickListener listener) {