pub unsafe extern "C" fn gtk_test_accessible_has_relation(
accessible: *mut GtkAccessible,
relation: GtkAccessibleRelation,
) -> gbooleanAvailable on crate feature
v4_10 only.pub unsafe extern "C" fn gtk_test_accessible_has_relation(
accessible: *mut GtkAccessible,
relation: GtkAccessibleRelation,
) -> gbooleanv4_10 only.