def METHOD_NAME() -> None:
    """Check if Data classes for complaint is parsed correctly."""
    with open(os.path.join(data_dir, 'complaint.json'), encoding='utf-8') as file:
        data = file.read()
    obj = aws_ses.SesEvent.from_json(data)
    assert obj.complaint
    assert obj.complaint.feedbackid
    assert obj.complaint.complaint_sub_type is None
    assert obj.complaint.arrival_date
    assert len(obj.complaint.complained_recipients) == 1
    assert obj.complaint.complaint_feedback_type == 'abuse'
    assert obj.complaint.user_agent == 'Amazon SES Mailbox Simulator'