traderinteractive / filter-php

        return $customError;

    }

    private static function getAllowUnknowns(array $options) : bool

    {

        $allowUnknowns = $options[FiltererOptions::ALLOW_UNKNOWNS];

        if ($allowUnknowns !== false && $allowUnknowns !== true) {

            throw new InvalidArgumentException(sprintf("'%s' option was not a bool", FiltererOptions::ALLOW_UNKNOWNS));

        }

        return $allowUnknowns;

    }

    private static function getDefaultRequired(array $options) : bool

    {

        return $allowUnknowns;

    }

    private static function getDefaultRequired(array $options) : bool

    {

        $defaultRequired = $options[FiltererOptions::DEFAULT_REQUIRED];

        if ($defaultRequired !== false && $defaultRequired !== true) {

            throw new InvalidArgumentException(

                sprintf("'%s' option was not a bool", FiltererOptions::DEFAULT_REQUIRED)

            );

        }

        return $defaultRequired;

    }

    /**

     * @param string         $responseType   The type of object that should be returned.