public void logMessageForTask(String taskId, String logMessage) {
        Validate.notBlank(taskId, "Task id cannot be blank");
        postForEntityWithRequestOnly("tasks/" + taskId + "/log", logMessage);
    }
Log execution messages for a task.

@param taskId id of the task
@param logMessage the message to be logged
client/src/main/java/com/netflix/conductor/client/http/TaskClient.java