protected function compileCode(&$code)
{
$code .= '(';
$this->leftOperand->compileCode($code);
$code .= ' ' . $this->operator . ' ';
if ($this->operator === Operators\Binary::IS_INSTANCE_OF && $this->rightOperand instanceof ValueExpression) {
$code .= $this->rightOperand->getValue();
} else {
$this->rightOperand->compileCode($code);
}
$code .= ')';
}