public static ResponseBuilder handleError( Status status, RestError restError, String lang ) {
		return handleError( status.getStatusCode(), restError, lang );
	}
public static ResponseBuilder handleError ( Status status , RestError restError , String lang ) { return handleError ( status . getStatusCode ( ) , restError , lang ) ; }
Handles an error and makes the magic stuff so that users can understand it.
@param status the response's status
@param restError a REST error
@param lang the user language
@return a response builder