code: def bootstrap_styled(cls=None, add_meta=True, form_group=True, 
      input_class='form-control'):
      
  
      def real_decorator(cls):
          class NewClass(cls): pass
          NewClass.__name__ = cls.__name__
          NewClass = custom_widget_wrapper(NewClass)
  
          _call = NewClass.__call__
  
          def call(*args, **kwargs):
              if input_class:
                  kwargs.setdefault('class', input_class)
  
              return _call(*args, **kwargs)
  
          if add_meta: call = meta_wrapped(call)
          if form_group: call = form_group_wrapped(call)
  
          NewClass.__call__ = call
          return NewClass
  
      if cls:
          # Allow calling decorator(cls) instead of decorator()(cls)
          rv = real_decorator(cls)
          return rv
  
      return real_decorator
docs: Wrap a widget to conform with Bootstrap's html control design.
      
      
      Args:
          input_class: Class to give to the rendered <input> control.
          add_meta: bool: