docs: def find_return_with_argument(self, node):
          """Finds and returns a return statment that has an argument.
  
          Note that we should use node.returns in Python 3, but this method is never called in Python 3 so we don't bother
          checking.
  
          """
          for item in node.body:
              if isinstance(item, ast.Return) and item.value:
                  return item
              elif not isinstance(item, ast.FunctionDef) and hasattr(item, 'body'):
                  return_with_argument = self.find_return_with_argument(item)
                  if return_with_argument:
                      return return_with_argument