*
* Gets the mime type for the content type, if one is registered.
*
- * Returns: (allow-none): the registered mime type for the given @type,
+ * Returns: (nullable): the registered mime type for the given @type,
* or %NULL if unknown.
*/
char *
*
* Tries to find a content type based on the mime type name.
*
- * Returns: (allow-none): Newly allocated string with content type
- * or %NULL. Free with g_free()
+ * Returns: (nullable): Newly allocated string with content type or
+ * %NULL. Free with g_free()
*
* Since: 2.18
**/