code: def _combined_wildcards_iter(flatterm: Iterator[TermAtom]) -> Iterator[TermAtom]:
          
          last_wildcard = None  # type: Optional[Wildcard]
          for term in flatterm:
              if isinstance(term, Wildcard) and not isinstance(term, SymbolWildcard):
                  if last_wildcard is not None:
                      new_min_count = last_wildcard.min_count + term.min_count
                      new_fixed_size = last_wildcard.fixed_size and term.fixed_size
                      last_wildcard = Wildcard(new_min_count, new_fixed_size)
                  else:
                      last_wildcard = Wildcard(term.min_count, term.fixed_size)
              else:
                  if last_wildcard is not None:
                      yield last_wildcard
                      last_wildcard = None
                  yield term
          if last_wildcard is not None:
              yield last_wildcard
docs: Combine consecutive wildcards in a flatterm into a single one.