bool

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                     MONGOC_READ_CONCERN_APPEND(3)

       This  function  appends  a  read concern to command options. It is useful for appending a read concern to
       command options before passing them to mongoc_client_read_command_with_opts() or a related function  that
       takes an options document.

       See the example code for mongoc_client_read_command_with_opts().

       • read_concern: A pointer to a mongoc_read_concern_t.

       • command: A pointer to a bson_t.

       Returns true on success. If any arguments are invalid, returns false and logs an error.

          bool
          mongoc_read_concern_append (mongoc_read_concern_t *read_concern, bson_t *opts);