bool

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                      BSON_ITER_FIND_DESCENDANT(3)

       The  bson_iter_find_descendant()  function  shall  follow  standard  MongoDB dot notation to recurse into
       subdocuments. descendant will be initialized and advanced to the descendant. If false is  returned,  both
       iter and descendant should be considered invalid.

       • iter: A bson_iter_t.

       • dotkey: A dot-notation key like "a.b.c.d".

       • descendant: A bson_iter_t.

       true  is  returned  if  the requested key was found. If not, false is returned and iter was exhausted and
       should now be considered invalid.

          bool
          bson_iter_find_descendant (bson_iter_t *iter,
                                     const char *dotkey,
                                     bson_iter_t *descendant);