'Create a tuple storing the expected cohort information.'

@staticmethod
def create_expected_cohort(cohort, user_count, assignment_type, user_partition_id=None, group_id=None):

    cohort_tuple = namedtuple('Cohort', 'name    id    user_count    assignment_type    user_partition_id    group_id')
    return cohort_tuple(name=cohort.name, id=cohort.id, user_count=user_count, assignment_type=assignment_type, user_partition_id=user_partition_id, group_id=group_id)
