code: def focus(self, f):
          
  
          ret = copy.copy(self)
          ret._focus = f
          return ret
docs: Get a new UI proxy copy with the given focus. Return a new UI proxy object as the UI proxy is immutable.
  
          Args:
              f (2-:obj:`tuple`/2-:obj:`list`/:obj:`str`): the focus point, it can be specified as 2-list/2-tuple
               coordinates (x, y) in NormalizedCoordinate system or as 'center' or 'anchor'.
  
          Returns:
              :py:class:`UIObjectProxy <poco.proxy.UIObjectProxy>`: a new UI proxy object (copy)