code: def as_ordered(self, inplace=False):
          
          inplace = validate_bool_kwarg(inplace, 'inplace')
          return self.set_ordered(True, inplace=inplace)
docs: Set the Categorical to be ordered.
  
          Parameters
          ----------
          inplace : bool, default False
             Whether or not to set the ordered attribute in-place or return
             a copy of this categorical with ordered set to True.