def visited_children
      children.map do |node|
        if node.is_a?(Parser::AST::Node)
          visit(node)
        else
          node
        end
      end
    end
def visited_children
      children.map do |node|
        if node.is_a?(Parser::AST::Node)
          visit(node)
        else
          node
        end
      end
    end
Return visited children

 @return [Array<Parser::Ast::Node>]

 @api private