FluidTYPO3\Vhs\ViewHelpers\Form\SelectViewHelper::getOptions PHP Method

    protected function getOptions()
    {
        if (!is_array($this->arguments['options']) && !$this->arguments['options'] instanceof \Traversable) {
            return [];
        }
        $options = [];
        $optionsArgument = $this->arguments['options'];
        foreach ($optionsArgument as $key => $value) {
            if (is_object($value)) {
                if (isset($this->arguments['optionValueField']) && !empty($this->arguments['optionValueField'])) {
                    $key = ObjectAccess::getProperty($value, $this->arguments['optionValueField']);
                    if (true === is_object($key)) {
                        if (true === method_exists($key, '__toString')) {
                            $key = (string) $key;
                        } else {
                            throw new Exception('Identifying value for object of class "' . get_class($value) . '" was an object.', 1247827428);
                        }
                    }
                } elseif (null !== $this->persistenceManager->getBackend()->getIdentifierByObject($value)) {
                    $key = $this->persistenceManager->getBackend()->getIdentifierByObject($value);
                } elseif (true === method_exists($value, '__toString')) {
                    $key = (string) $value;
                } else {
                    throw new Exception('No identifying value for object of class "' . get_class($value) . '" found.', 1247826696);
                }
                if (isset($this->arguments['optionLabelField']) && !empty($this->arguments['optionLabelField'])) {
                    $value = ObjectAccess::getProperty($value, $this->arguments['optionLabelField']);
                    if (true === is_object($value)) {
                        if (true === method_exists($value, '__toString')) {
                            $value = (string) $value;
                        } else {
                            throw new Exception('Label value for object of class "' . get_class($value) . '" was an object without ' . 'a __toString() method.', 1247827553);
                        }
                    }
                } elseif (true === method_exists($value, '__toString')) {
                    $value = (string) $value;
                } elseif (null !== $this->persistenceManager->getBackend()->getIdentifierByObject($value)) {
                    $value = $this->persistenceManager->getBackend()->getIdentifierByObject($value);
                }
            }
            $options[$key] = $value;
        }
        if (isset($this->arguments['sortByOptionLabel']) && !empty($this->arguments['sortByOptionLabel'])) {
            asort($options);
        }
        return $options;
    }