clearTargetNicknameIfUs

enum us = "kameloso";
enum notUs = "hirrsteff";

IRCPluginState state;
state.client.nickname = us;

{
    IRCEvent event;
    event.type = IRCEvent.Type.MODE;
    event.target.nickname = us;
    event.clearTargetNicknameIfUs(state);
    assert((event.target.nickname == us), event.target.nickname);
}
{
    IRCEvent event;
    event.type = IRCEvent.Type.MODE;
    event.target.nickname = notUs;
    event.clearTargetNicknameIfUs(state);
    assert((event.target.nickname == notUs), event.target.nickname);
}