Interface that defines how to clone an Ref.
Returns a copy of the Ref.
Implemented in TargetedAction, Animate, ReverseTime, DelayTime, TintBy, TintTo, EaseCubicActionInOut, FadeOut, EaseCubicActionOut, EaseCubicActionIn, FadeIn, EaseCircleActionInOut, FadeTo, EaseCircleActionOut, EaseCircleActionIn, Blink, EaseQuinticActionInOut, ScaleBy, EaseQuinticActionOut, EaseQuinticActionIn, EaseQuarticActionInOut, ScaleTo, EaseQuarticActionOut, EaseQuarticActionIn, BezierTo, EaseQuadraticActionInOut, EaseQuadraticActionOut, BezierBy, EaseQuadraticActionIn, EaseBezierAction, JumpTo, EaseBackInOut, JumpBy, EaseBackOut, SkewBy, EaseBackIn, EaseBounceInOut, SkewTo, EaseBounceOut, MoveTo, EaseBounceIn, EaseBounce, MoveBy, EaseElasticInOut, Twirl, SplitCols, EaseElasticOut, RotateBy, SplitRows, __CCCallFuncO, EaseElasticIn, Waves, JumpTiles3D, __CCCallFuncND, RotateTo, EaseElastic, CallFuncN, Liquid, WavesTiles3D, EaseSineInOut, ReuseGrid, Spawn, EaseSineOut, StopGrid, CallFunc, Shaky3D, TurnOffTiles, EaseSineIn, DeccelAmplitude, CatmullRomBy, Follow, EaseExponentialInOut, RepeatForever, Ripple3D, FadeOutDownTiles, CatmullRomTo, Place, AccelAmplitude, EaseExponentialOut, Animation, FadeOutUpTiles, CCBEaseInstant, CardinalSplineBy, Speed, FlipY, EaseExponentialIn, CCBRotateYTo, FadeOutBLTiles, Repeat, AccelDeccelAmplitude, CCBRotateXTo, EaseInOut, FadeOutTRTiles, Lens3D, FlipX, CardinalSplineTo, CCBRotateTo, TiledGrid3DAction, CCBSoundEffect, FiniteTimeAction, EaseOut, SpriteFrame, RemoveSelf, CCBSetSpriteFrame, Sequence, EaseIn, FlipY3D, ActionTimeline, ShuffleTiles, ToggleVisibility, PointArray, OrbitCamera, Grid3DAction, AnimationFrame, Hide, FlipX3D, EaseRateAction, ShatteredTiles3D, ActionInterval, ProgressFromTo, LuaCallFunc, ActionTween, Show, Waves3D, Animate3D, PageTurn3D, ActionCamera, Action, ActionEase, GridAction, ProgressTo, ShakyTiles3D, and ActionInstant.
1.8.8 
