Schedules execution of a task to take place at some point in the future.
@param delay the number of milliseconds, in the future, to schedule the
task for.
@param handler a handler to associate with the task. This is notified
when the deadline for the task is reached.
@return an object representing the task that has been scheduled.
Schedules execution of a task to take place at some point in the future. @param delay the number of milliseconds, in the future, to schedule the task for. @param handler a handler to associate with the task. This is notified when the deadline for the task is reached. @return an object representing the task that has been scheduled.