Detaches child_source from source and destroys it.
This API is only intended to be used by implementations of #GSource. Do not call this API on a #GSource that you did not create.
a #GSource previously passed to glib.source.Source.addChildSource.
Detaches child_source from source and destroys it.
This API is only intended to be used by implementations of #GSource. Do not call this API on a #GSource that you did not create.