How to use

SystemProcessTaskFactory

in

brooklyn.util.task.system.internal

  @Override
  public KnifeTaskFactory<String> requiringZeroAndReturningStdout() {
    return (KnifeTaskFactory<String>) super.requiringZeroAndReturningStdout();
  }
}

@Override
public <RET2> KnifeTaskFactory<RET2> returning(Function<ProcessTaskWrapper<?>, RET2> resultTransformation) {
  return (KnifeTaskFactory<RET2>) super.returning(resultTransformation);
}

@Override
public KnifeTaskFactory<Boolean> returningIsExitCodeZero() {
  return (KnifeTaskFactory<Boolean>) super.returningIsExitCodeZero();
}

@Override
public T machine(SshMachineLocation machine) {
  log.warn("Not permitted to set machines on "+this+" (ignoring - "+machine+")");
  if (log.isDebugEnabled())
    log.debug("Source of attempt to set machines on "+this+" ("+machine+")",
        new Throwable("Source of attempt to set machines on "+this+" ("+machine+")"));
  return self();
}

@Override
public List<Function<ProcessTaskWrapper<?>, Void>> getCompletionListeners() {
  MutableList<Function<ProcessTaskWrapper<?>, Void>> result = MutableList.copyOf(super.getCompletionListeners());
  if (throwOnCommonKnifeErrors != Boolean.FALSE)
    insertKnifeCompletionListenerIntoCompletionListenersList(result);
  return result.toImmutable();
}

@Override
public List<String> getCommands() {
  MutableList<String> result = new MutableList<String>();
  String setupCommands = knifeSetupCommands();
  if (setupCommands != null && Strings.isNonBlank(setupCommands))
    result.add(setupCommands);
  int numKnifes = 0;
  for (String c: super.getCommands()) {
    if (c==KNIFE_PLACEHOLDER)
      result.add(buildKnifeCommand(numKnifes++));
    else
      result.add(c);
  }
  if (numKnifes==0)
    result.add(buildKnifeCommand(numKnifes++));
  return result.toImmutable();
}

@Override
public <T2> KnifeTaskFactory<T2> returning(ScriptReturnType type) {
  return (KnifeTaskFactory<T2>) super.<T2>returning(type);
}