Appends or inserts a new key frame step into a key frame shape.
Namespace: Editor.KeyFrames
Void AppendOrInsertKeyFrameStep(Avolites.Titan.Controllers.Handles.ITitanItemHandle, Int32, Avolites.Titan.Controllers.RecordCueMode)
http://[ip]:4430/titan/script/Editor/KeyFrames/AppendOrInsertKeyFrameStep
shapeHandle: The key frame shape's handle.
stepNumber: The key frame step number.
recordMode: The record mode.