pub unsafe extern "C" fn gdk_content_provider_write_mime_type_finish(
provider: *mut GdkContentProvider,
result: *mut GAsyncResult,
error: *mut *mut GError
) -> gboolean
pub unsafe extern "C" fn gdk_content_provider_write_mime_type_finish(
provider: *mut GdkContentProvider,
result: *mut GAsyncResult,
error: *mut *mut GError
) -> gboolean