code: def setMaximumSize(self, *args):
          
          super(XView, self).setMaximumSize(*args)
          
          if ( not self.signalsBlocked() ):
              self.sizeConstraintChanged.emit()
docs: Sets the maximum size value to the inputed size and emits the \
          sizeConstraintChanged signal.
          
          :param      *args | <tuple>