rb_define_method(notmuch_rb_cMessage, "thread_id", notmuch_rb_message_get_thread_id, 0);
rb_define_method(notmuch_rb_cMessage, "replies", notmuch_rb_message_get_replies, 0);
rb_define_method(notmuch_rb_cMessage, "filename", notmuch_rb_message_get_filename, 0);
rb_define_method(notmuch_rb_cMessage, "thread_id", notmuch_rb_message_get_thread_id, 0);
rb_define_method(notmuch_rb_cMessage, "replies", notmuch_rb_message_get_replies, 0);
rb_define_method(notmuch_rb_cMessage, "filename", notmuch_rb_message_get_filename, 0);