Neos\Flow\Validation\Validator\AbstractCompositeValidator::__construct PHP Method

    public function __construct(array $options = [])
    {
        // check for options given but not supported
        if (($unsupportedOptions = array_diff_key($options, $this->supportedOptions)) !== []) {
            throw new InvalidValidationOptionsException('Unsupported validation option(s) found: ' . implode(', ', array_keys($unsupportedOptions)), 1339079804);
        }
        // check for required options being set
        array_walk($this->supportedOptions, function ($supportedOptionData, $supportedOptionName, $options) {
            if (isset($supportedOptionData[3]) && !array_key_exists($supportedOptionName, $options)) {
                throw new InvalidValidationOptionsException('Required validation option not set: ' . $supportedOptionName, 1339163922);
            }
        }, $options);
        // merge with default values
        $this->options = array_merge(array_map(function ($value) {
            return $value[0];
        }, $this->supportedOptions), $options);
        $this->validators = new \SplObjectStorage();
    }