How to Call Task from TaskManager?

 import java.util.HashMap;

import java.util.Map;

import sailpoint.api.SailPointContext;

import sailpoint.api.TaskManager;

import sailpoint.object.Attributes;

import sailpoint.object.TaskDefinition;

import sailpoint.object.TaskResult;

import sailpoint.tools.GeneralException;

public class CallTask {

static SailPointContext context = null;

public static void main(String[] args) {

String taskName = "Test Rule";

Map map = new HashMap();

map.put("UserID", "000123");

Attributes attributes = new Attributes();

attributes.setMap(map);

try {

TaskManager taskManager = new TaskManager(context);

TaskDefinition taskDefinition = taskManager.getTaskDefinition(taskName);

TaskResult runWithResult = taskManager.runWithResult(taskDefinition, attributes);

runWithResult.getId();

} catch (GeneralException e) {

System.out.println("GeneralException: " + e.getMessage());

}

}

}