public static function camelize(string $string, string $delimiter = '_'): string
	{
		$cacheKey = __FUNCTION__ . $delimiter;

		$result = static::_cache($cacheKey, $string);

		if ($result === false) {
			$result = \str_replace(' ', '', static::humanize($string, $delimiter));
			static::_cache($cacheKey, $string, $result);
		}

		return $result;
	}