package com.github.aakira.expandablelayout;

public abstract class ExpandableLayoutListenerAdapter implements ExpandableLayoutListener {
    /**
     * {@inheritDoc}
     */
    @Override
    public void onAnimationStart() {
    }

    /**
     * {@inheritDoc}
     */
    public void onAnimationEnd() {
    }

    /**
     * {@inheritDoc}
     */
    public void onPreOpen() {
    }

    /**
     * {@inheritDoc}
     */
    public void onPreClose() {
    }

    /**
     * {@inheritDoc}
     */
    public void onOpened() {
    }

    /**
     * {@inheritDoc}
     */
    public void onClosed() {
    }
}
@@ -254,32 +254,46 @@
 ritDoc%7D%0A     */%0A
+    @Override%0A
     public void 
@@ -307,24 +307,24 @@
 tionEnd() %7B%0A
-
     %7D%0A%0A    /
@@ -347,32 +347,46 @@
 ritDoc%7D%0A     */%0A
+    @Override%0A
     public void 
@@ -435,32 +435,46 @@
 ritDoc%7D%0A     */%0A
+    @Override%0A
     public void 
@@ -524,32 +524,46 @@
 ritDoc%7D%0A     */%0A
+    @Override%0A
     public void 
@@ -607,32 +607,32 @@
 inheritDoc%7D%0A
-
      */%0A
     public v
@@ -615,24 +615,38 @@
 oc%7D%0A     */%0A
+    @Override%0A
     public v

Add override annotations in ExpandableLayoutListenerAdapter.