Pinq\Expressions\UnaryOperationExpression::getOperand PHP Méthode

    public function getOperand()
    {
        return $this->operand;
    }

 public function visitUnaryOperation(O\UnaryOperationExpression $expression)
 {
     $this->walk($expression->getOperand());
     $this->addTypeOperation($expression, $this->analysis[$expression->getOperand()]->getUnaryOperation($expression));
 }