pub unsafe extern "C" fn gst_analytics_relation_meta_add_group_mtd(
instance: *mut GstAnalyticsRelationMeta,
pre_alloc_size: size_t,
group_mtd: *mut GstAnalyticsGroupMtd,
) -> gbooleanpub unsafe extern "C" fn gst_analytics_relation_meta_add_group_mtd(
instance: *mut GstAnalyticsRelationMeta,
pre_alloc_size: size_t,
group_mtd: *mut GstAnalyticsGroupMtd,
) -> gboolean