Get a notmuch_messages_t iterator for all of the replies to
'message'.
Note: This call only makes sense if 'message' was ultimately
obtained from a notmuch_thread_t object, (such as by coming
directly from the result of calling notmuch_thread_get_
toplevel_messages or by any number of subsequent
calls to notmuch_message_get_replies).
If 'message' was obtained through some non-thread means, (such as
by a call to notmuch_query_search_messages), then this function
will return NULL.
If there are no replies to 'message', this function will return
NULL. (Note that notmuch_messages_valid will accept that NULL
value as legitimate, and simply return FALSE for it.)
Get a notmuch_messages_t iterator for all of the replies to 'message'.
Note: This call only makes sense if 'message' was ultimately obtained from a notmuch_thread_t object, (such as by coming directly from the result of calling notmuch_thread_get_ toplevel_messages or by any number of subsequent calls to notmuch_message_get_replies).
If 'message' was obtained through some non-thread means, (such as by a call to notmuch_query_search_messages), then this function will return NULL.
If there are no replies to 'message', this function will return NULL. (Note that notmuch_messages_valid will accept that NULL value as legitimate, and simply return FALSE for it.)