How to use the troika-animation.MultiTween function in troika-animation

prevKeyframe.props[prop], //fromValue
                        props[prop], //toValue
                        (keyframe.time - prevKeyframe.time) * duration, //duration
                        prevKeyframe.time * duration, //delay
                        'linear', //easing
                        1, //iterations
                        'forward', //direction
                        animDesc.interpolate && animDesc.interpolate[prop] || 'number'
                      )
                      propTween.$$property = prop
                      keyframePropTweens.push(propTween)
                    }
                  }
                }
              }
              let tween = newAnimTweens[animId] = new MultiTween(keyframePropTweens, duration, delay, easing, iterations, direction)
              if (!animDesc.paused) {
                runner.start(tween)
              }

              // The tween runner won't do anything until next tick, so immediately sync to the first frame's
              // properties if the animation has no delay to avoid a flash of bad initial state
              if (delay === 0) {
                let firstKeyframeProps = keyframes[0].props
                for (let prop in firstKeyframeProps) {
                  if (firstKeyframeProps.hasOwnProperty(prop)) {
                    this[prop + '➤anim:actuallySet'](firstKeyframeProps[prop])
                  }
                }
              }
            }