Makes this instance a deep copy of the specified MediaTimeline. When copying dependency properties, this method copies resource references and data bindings (but they might no longer resolve) but not animations or their current values.
Assembly: PresentationCore (in PresentationCore.dll)
This method is called by the Clone method and should not be called directly from your code, except when calling the base implementation while overriding this method. To create a modifiable copy of the current object, call Clone instead of calling this method directly.
For more information, see Freezable.CloneCore.