Empty String argument possible with two subsequent String parameters

Consider the following code (to create a chatroom, in this particular case) in a command:
```java
@Subcommand("create")
public void create(CommandSender sender, @Single String name, @Single @Optional String password) {
// some action
}
```

If a user types `/room_create__something` (please think of `_` as a space, a double space was formatted away in this editor) name is an empty string and password will be `something` (because of the double space between `create` and `something`!)
As you cannot call other commands that have a String parameter as the last parameter with an empty string by just adding spaces (e.g. `/room_delete__`), I doubt that this works as intended - I would expect the second argument to actually be the second argument instead of supplying me with an empty string.