code: def visit_tuple(self, node, parent):
          
          context = self._get_context(node)
          newnode = nodes.Tuple(
              ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent
          )
          newnode.postinit([self.visit(child, newnode) for child in node.elts])
          return newnode
docs: visit a Tuple node by returning a fresh instance of it