Retrieves the list of content types that app_info claims to support.
If this information is not provided by the environment, this function
will return NULL.
This function does not take in consideration associations added with
g_app_info_add_supports_type(), but only those exported directly by
the application.
Retrieves the list of content types that app_info claims to support. If this information is not provided by the environment, this function will return NULL. This function does not take in consideration associations added with g_app_info_add_supports_type(), but only those exported directly by the application.