src/Base/ConfigReader.php
protected function readFileData($_fileName_ = null) {
        if (!file_exists($_fileName_)) {
            return null;
        }
        /** @noinspection PhpIncludeInspection */
        $_conf_data_ = include $_fileName_;
        return is_array($_conf_data_) ? $_conf_data_ : [];
    }
protected function readFileData($_fileName_ = null) {
        if (!file_exists($_fileName_)) {
            return null;
        }
        /** @noinspection PhpIncludeInspection */
        $_conf_data_ = include $_fileName_;
        return is_array($_conf_data_) ? $_conf_data_ : [];
    }
Read particular config file
@param string $_fileName_
@return array|null