const char *

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                                  BSON_ITER_KEY(3)

       Fetches the key for the current element observed by iter.

       • iter: A bson_iter_t.

       A string which should not be modified or freed.

       SEEALSO:bson_iter_key_len() to retrieve the length of the key in constant time.

          const char *
          bson_iter_key (const bson_iter_t *iter);