play(clipName) {
    const clip = AnimationClip.findByName(this.clips, clipName);
    return this.mixer.clipAction(clip).play();
  }
@method play
@instance
@description Plays the given clip name
@param {String} clipName - the clip to play
@return {THREE.AnimationAction} Playing action 
@memberof module:modules/mesh.AnimationModule