+XBT_PUBLIC(void) MSG_storage_set_property_value(msg_storage_t storage, const char *name, char *value,void_f_pvoid_t free_ctn);
+XBT_PUBLIC(xbt_dynar_t) MSG_storages_as_dynar(void);
+XBT_PUBLIC(msg_error_t) MSG_storage_set_data(msg_storage_t host, void *data);
+XBT_PUBLIC(void *) MSG_storage_get_data(msg_storage_t storage);
+XBT_PUBLIC(xbt_dict_t) MSG_storage_get_content(msg_storage_t storage);
+XBT_PUBLIC(sg_storage_size_t) MSG_storage_get_size(msg_storage_t storage);