Makes this instance a frozen clone of the specified Timeline. Resource references, data bindings, and animations are not copied, but their current values are.
Assembly: PresentationCore (in PresentationCore.dll)
This method is called by the GetCurrentValueAsFrozen method and should not be called directly from your code, except when calling the base implementation while overriding this method. To create a frozen copy of the current object, call GetCurrentValueAsFrozen instead of calling this method directly.
For more information see Freezable.GetCurrentValueAsFrozenCore.