code: def parse_node(self, node):
          
  
          if node.get('id') in self.parsed_nodes:
              return self.parsed_nodes[node.get('id')]
  
          (node_parser, spec_class) = self.parser._get_parser_class(node.tag)
          if not node_parser or not spec_class:
              raise ValidationException(
                  "There is no support implemented for this task type.",
                  node=node, filename=self.filename)
          np = node_parser(self, spec_class, node)
          task_spec = np.parse_node()
  
          return task_spec
docs: Parses the specified child task node, and returns the task spec. This
          can be called by a TaskParser instance, that is owned by this
          ProcessParser.