+int ident_to_json (const graph_ident_t *ident,
+ yajl_gen handler);
+int ident_data_to_json (const graph_ident_t *ident,
+ dp_time_t begin, dp_time_t end,
+ yajl_gen handler);
+
+int ident_describe (const graph_ident_t *ident, const graph_ident_t *selector,
+ char *buffer, size_t buffer_size);