public function __construct($UnaryOperationNodeType, $OperandProperty = 'expr')
{
parent::__construct('Expr_' . $UnaryOperationNodeType);
$this->UnaryOperationNodeType = $UnaryOperationNodeType;
$this->OperandProperty = $OperandProperty;
$this->UnaryOperation = self::UnaryOperations()[$UnaryOperationNodeType];
}