-const char* session_state_to_string(SessionState t);
-SessionState session_state_from_string(const char *s);
+int session_send_create_reply(Session *s, DBusError *error);
+
+const char* session_state_to_string(SessionState t) _const_;
+SessionState session_state_from_string(const char *s) _pure_;
+
+const char* session_type_to_string(SessionType t) _const_;
+SessionType session_type_from_string(const char *s) _pure_;