(Statements
  (Match
    (Send
      (Identifier))
    (Statements
      (Pattern
        (Statements
          (Send
            (Identifier)))
        (Statements
        {+(Send
          {+(Identifier)+})+}))
    {+(Pattern
      {+(Statements
        {+(Send
          {+(Identifier)+})+}
        {+(Send
          {+(Identifier)+})+})+}
      {+(Statements)+})+}
    {+(Send
      {+(Identifier)+})+}))
{-(Match
  {-(Empty)-}
  {-(Statements
    {-(Pattern
      {-(Statements
        {-(Boolean)-})-}
      {-(Statements
        {-(TextElement)-})-})-})-})-})