@ Nullable public static String getUserDisplayName ( @ Nullable final String sUserID , @ Nonnull final Locale aDisplayLocale ) { if ( StringHelper . hasNoText ( sUserID ) ) return getGuestUserDisplayName ( aDisplayLocale ) ; final IUser aUser = PhotonSecurityManager . getUserMgr ( ) . getUserOfID ( sUserID ) ; return aUser == null ? sUserID : getUserDisplayName ( aUser , aDisplayLocale ) ; }
Get the display name of the user .