@Override
    public void visitPosixBracketExpression(RegExpPosixBracketExpression posixBracketExpression) {
      super.visitPosixBracketExpression(posixBracketExpression);
      myLength++;
    }
@Override
    public void visitPosixBracketExpression(RegExpPosixBracketExpression posixBracketExpression)