code: function( timeScale ) {
  
  		if( timeScale !== 1.0 ) {
  
  			var times = this.times;
  
  			for( var i = 0, n = times.length; i !== n; ++ i ) {
  
  				times[ i ] *= timeScale;
  
  			}
  
  		}
  
  		return this;
  
  	}
docs: scale all keyframe times by a factor (useful for frame <-> seconds conversions)