shift( timeOffset ) {

		if ( timeOffset !== 0.0 ) {

			const times = this.times;

			for ( let i = 0, n = times.length; i !== n; ++ i ) {

				times[ i ] += timeOffset;

			}

		}

		return this;

	}
Moves all keyframes either forward or backward in time.

@param {number} timeOffset - The offset to move the time values.
@return {KeyframeTrack} A reference to this keyframe track.