protected function determineClass(string $library): array
	{
		// We don't want to actually call static methods
		// by default, so convert any double colons.
		$library = str_replace('::', ':', $library);

		list($class, $method) = explode(':', $library);

		if (empty($class))
		{
			throw ViewException::forNoCellClass();
		}

		if (! class_exists($class, true))
		{
			throw ViewException::forInvalidCellClass($class);
		}

		if (empty($method))
		{
			$method = 'index';
		}

		return [
			$class,
			$method,
		];
	}