@JsonIgnore
	public String getUsername() {
		if (App.isRoot(user.getAppid())) {
			return user.getIdentifier();
		} else {
			return user.getAppid() + "/" + user.getIdentifier();
		}
	}
@ JsonIgnore public String getUsername ( ) { if ( App . isRoot ( user . getAppid ( ) ) ) { return user . getIdentifier ( ) ; } else { return user . getAppid ( ) + "/" + user . getIdentifier ( ) ; } }
The username. Same as {@link User#getIdentifier()}
@return {@link User#getIdentifier()} if user.appid == root appid, or "appid/user.identifier" if child app,
@see User#getIdentifier()