-extern bool send_add_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *);
-extern bool send_del_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *);
+extern bool send_add_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);
+extern bool send_del_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);