public static function sort($map)
{
Preconditions::checkNotNull($map, "Cannot sort a null object.");
ksort($map);
return $map;
}
public static function formURLEncodeMap($map)
{
Preconditions::checkNotNull($map, "Cannot url-encode a null object");
return $map ? self::doFormUrlEncode($map) : self::EMPTY_STRING;
}