Function function = subsystem.getFunction(functionId);
Function function = getFunction(subsystem, functionId);
  public static Function getFunction(Signet signet, int functionNumber)  throws ObjectNotFoundException  {    Subsystem subsystem = signet.getSubsystem(Constants.SUBSYSTEM_ID);    String functionId = makeFunctionId(functionNumber);    Function function = subsystem.getFunction(functionId);        return function;  }