/// <summary>
/// Fires before the animation starts. A handler can return false to cancel the animation.
/// </summary>
/// <param name="this">
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void beforeanimate(Animator @this, object eOpts){}
/// <summary>
/// Fires at each keyframe.
/// </summary>
/// <param name="this">
/// </param>
/// <param name="keyframe"><p>step number</p>
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void keyframe(Animator @this, JsNumber keyframe, object eOpts){}
/// <summary>
/// Fires when the animation is complete.
/// </summary>
/// <param name="this">
/// </param>
/// <param name="startTime">
/// </param>
/// <param name="eOpts"><p>The options object passed to <see cref="Ext.util.Observable.addListener">Ext.util.Observable.addListener</see>.</p>
/// </param>
public void afteranimate(Animator @this, JsDate startTime, object eOpts){}
