/**
* Remove the given file extension from the url data array.
* Modifies $data.
*
* @param array $data The url data
* @param string $extension The file extension to remove
* @throws UnexpectedValueException if the url doesn't end with the given extension
*/
protected function removeFileExtensionFromURLData(array &$data, $extension)
{
$length = count($data);
if (!Util::stringEndsWith($data[$length - 1], $extension)) {
throw new UnexpectedValueException("url doesn't end with {$extension}");
}
$data[$length - 1] = substr($data[$length - 1], 0, strlen($data[$length - 1]) - strlen($extension));
}
