(Statements
  (Class
    (Identifier)
    (Statements
      (Method
        (Void)
        (Empty)
        (Identifier)
        (Statements
        {+(AssertStatement
          {+(Identifier)+}
          {+(TextElement)+})+}
        {-(ForEach
          {-(Variable
            {-(Identifier)-}
            {-(Identifier)-})-}
          {-(Call
            {-(MemberAccess
              {-(Identifier)-})-}
            {-(Empty)-})-}
          {-(Statements
            {-(AssertStatement
              {-(Equal
                {-(Identifier)-}
                {-(Null)-})-})-})-})-})))))