/**
  * @param string $text
  *
  * @return UnitTestAggregate
  */
 public static function schedule($text)
 {
     $id = new Identifier('Unit-Test-ID-X');
     $instance = new self();
     $instance->trackThat(new UnitTestEvent($id, $text), []);
     return $instance;
 }
 public static function init($id, $text)
 {
     $instance = new self();
     $instance->trackThat(new UnitTestEvent(new Identifier($id), $text), []);
     return $instance;
 }