code: def _is_prefix_of_longer_match(self, key_presses):
          
          keys = tuple(k.key for k in key_presses)
          cli = self._cli_ref()
  
          # Get the filters for all the key bindings that have a longer match.
          # Note that we transform it into a `set`, because we don't care about
          # the actual bindings and executing it more than once doesn't make
          # sense. (Many key bindings share the same filter.)
          filters = set(b.filter for b in self._registry.get_bindings_starting_with_keys(keys))
  
          # When any key binding is active, return True.
          return any(f(cli) for f in filters)
docs: For a list of :class:`KeyPress` instances. Return True if there is any
          handler that is bound to a suffix of this keys.