Pinq\Queries\Requests\ProjectionRequestBase::hasProjectionFunction PHP Method

    public function hasProjectionFunction()
    {
        return $this->projectionFunction !== null;
    }

 protected function updateOptionalProjection(Requests\ProjectionRequestBase $projectionRequest)
 {
     if ($projectionRequest->hasProjectionFunction()) {
         return $this->expressionProcessor->processFunction($projectionRequest->getProjectionFunction());
     }
     return $projectionRequest;
 }