code: def __recognize_scalar(self, node: yaml.Node,
                             expected_type: Type) -> RecResult:
          
          logger.debug('Recognizing as a scalar')
          if (isinstance(node, yaml.ScalarNode)
                  and node.tag == scalar_type_to_tag[expected_type]):
              return [expected_type], ''
          message = 'Failed to recognize a {}\n{}\n'.format(
              type_to_desc(expected_type), node.start_mark)
          return [], message
docs: Recognize a node that we expect to be a scalar.
  
          Args:
              node: The node to recognize.
              expected_type: The type it is expected to be.
  
          Returns:
              A list of recognized types and an error message