is_core

Get whether the given track element is a core track element.

That is, it was created by the create_track_elements Clip method for some Clip.

Note that such a track element can only be added to a clip that shares the same Asset as the clip that created it. For example, you are allowed to move core children between clips that resulted from ungroup , but you could not move the core child from a UriClip to a TitleClip or another UriClip with a different uri.

Moreover, if a core track element is added to a clip, it will always be added as a core child. Therefore, if this returns true, then element will be a core child of its parent clip.

Parameters:

this	A TrackElement

Returns:

true if element is a core track element.