code: def clear_search_defaults(self, args=None):
          
          if args is None:
              self._search_defaults.clear()
          else:
              for arg in args:
                  if arg in self._search_defaults:
                      del self._search_defaults[arg]
docs: Clear all search defaults specified by the list of parameter names
          given as ``args``.  If ``args`` is not given, then clear all existing
          search defaults.
  
          Examples::
  
              conn.set_search_defaults(scope=ldap.SCOPE_BASE, attrs=['cn'])
              conn.clear_search_defaults(['scope'])
              conn.clear_search_defaults()