+/**
+ * Get a value of a flag for the email corresponding to 'message'.
+ *
+ * @param message a message object
+ * @param flag flag to check
+ * @param is_set pointer to boolean to store flag value.
+ *
+ * @retval #NOTMUCH_STATUS_SUCCESS
+ * @retval #NOTMUCH_STATUS_NULL_POINTER is_set is NULL
+ * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION Accessing the database
+ * triggered an exception.
+ *
+ * @since libnotmuch 5.3 (notmuch 0.31)
+ */
+notmuch_status_t
+notmuch_message_get_flag_st (notmuch_message_t *message,
+ notmuch_message_flag_t flag,
+ notmuch_bool_t *is_set);
+