Finds the first GType from first that is also contained in second.
If no matching GType is found, G_TYPE_INVALID is returned.
the gdk.content_formats.ContentFormats to intersect with
The first common GType or G_TYPE_INVALID if none.
Finds the first GType from first that is also contained in second.
If no matching GType is found, G_TYPE_INVALID is returned.