docs: def parse_transition(self, node):
          """
          Parses <Transition>
  
          @param node: Node containing the <Transition> element
          @type node: xml.etree.Element
          """
  
          if 'regime' in node.lattrib:
              regime = node.lattrib['regime']
          else:
              self.raise_error('<Transition> mut specify a regime.')
  
          action = Transition(regime)
  
          self.current_event_handler.add_action(action)