public function __construct(\Closure $closure, MicroDateTime $startedOn, MicroDateTime $endsOn, $results = null)
{
if (empty($results)) {
$results = null;
}
if (!$startedOn->isBefore($endsOn)) {
throw new MicroDateTimeClosureException('The startedOn MicroDateTime must be before the endsOn MicroDateTime.');
}
$this->closure = $closure;
$this->startedOn = $startedOn;
$this->endsOn = $endsOn;
$this->results = $results;
}
