Finds the first GType from @first that is also contained in @second.
If no matching GType is found, %G_TYPE_INVALID is returned.
the GdkContentFormats to intersect with
The first common GType or %G_TYPE_INVALID if none.
See Implementation
Finds the first GType from @first that is also contained in @second.
If no matching GType is found, %G_TYPE_INVALID is returned.