protected function tokenizeXPathForExport($expr)
	{
		$tokens = [];
		foreach ($this->matchXPathForExport($expr) as $match)
		{
			foreach (array_reverse($match) as $k => $v)
			{
				// Use the last non-numeric match
				if (!is_numeric($k))
				{
					$tokens[] = [$k, $v];
					break;
				}
			}
		}

		return $tokens;
	}