This member overrides Freezable.CreateInstanceCore(), and more complete documentation might be available in that topic.
Creates a new instance of the Freezable derived class. When creating a derived class, you must override this method.
Assembly: PresentationCore (in PresentationCore.dll)
Animation classes inherit indirectly from Freezable. Because of this, you need to override the method to construct a custom animation object.
The following example shows a typical implementation of CreateInstanceCore.