def METHOD_NAME(self, interval,
                       expectedId=None,
                       expectedStart=None,
                       expectedTags=None,
                       expectedAnnotation=None,
                       description="interval"):
    self.assertKeyExists(interval, "start", description, "{} does not contain a start date")
    self.assertKeyNotExists(interval, "end", description, "{} does contain an end date")
    return self.assertInterval(interval,
                               expectedId=expectedId,
                               expectedStart=expectedStart,
                               expectedEnd=None,
                               expectedTags=expectedTags,
                               expectedAnnotation=expectedAnnotation,
                               description=description)