Pinq\Queries\Builders\Interpretations\IRequestInterpretation::interpretOffsetExists PHP Метод

    public function interpretOffsetExists($requestId, $indexId, $index);

 protected final function visitOffsetExists(O\Expression $expression)
 {
     $requestId = $this->getId('offset-exists');
     $indexId = $this->getId('offset-exists-index');
     if ($expression instanceof O\MethodCallExpression) {
         $this->interpretation->interpretOffsetExists($requestId, $indexId, $this->getArgumentValueAt(0, $expression));
         $this->interpretSourceAsScope($expression);
         return;
     } elseif ($expression instanceof O\IssetExpression) {
         $issetArguments = $expression->getValues();
         if (count($issetArguments) === 1 && $issetArguments[0] instanceof O\IndexExpression) {
             $this->interpretation->interpretOffsetExists($requestId, $indexId, $this->getValue($issetArguments[0]->getIndex()));
             $this->interpretSourceAsScope($issetArguments[0]);
             return;
         }
     }
     throw new PinqException('Cannot interpret offset exists request: invalid expression type, expecting %s, %s given', O\MethodCallExpression::getType() . ' or ' . O\IssetExpression::getType() . ' with a single parameter index', $expression->getType());
 }