addNull()

Creates a new null layer and adds the AVLayer object to this collection. This is the same as choosing Layer > New > Null object.duration Optional, the lengt

Collection object

Like an array, a collection associates a set of objects or values as a logical group and provides access to them by index. However, most collection objects

setTemporalEaseAtKey()

Sets the incoming and outgoing temporal ease for the specified keyframe. See KeyframeEase object .keyIndex The index for the keyframe. An integer in the ran