code: def init_widget(self):
          
          super(UiKitActivityIndicator, self).init_widget()
  
          d = self.declaration
          if d.size != 'normal':
              self.set_size(d.size)
          if d.color:
              self.set_color(d.color)
  
          #: Why would you want to stop an activity indicator?
          self.widget.startAnimating()
docs: Initialize the state of the toolkit widget.
  
          This method is called during the top-down pass, just after the
          'create_widget()' method is called. This method should init the
          state of the widget. The child widgets will not yet be created.