async def METHOD_NAME(client: DatetimeClient):
    await client.header.default(
        value=datetime.datetime(2022, 8, 26, 14, 38, 0, tzinfo=datetime.timezone.utc),
    )
    await client.header.rfc3339(
        value=datetime.datetime(2022, 8, 26, 18, 38, 0, tzinfo=datetime.timezone.utc),
    )
    await client.header.rfc7231(
        value=datetime.datetime(2022, 8, 26, 14, 38, 0, tzinfo=datetime.timezone.utc),
    )
    await client.header.unix_timestamp(
        value=datetime.datetime(2023, 6, 12, 10, 47, 44, tzinfo=datetime.timezone.utc),
    )
    await client.header.unix_timestamp_array(
        value=[
            datetime.datetime(2023, 6, 12, 10, 47, 44, tzinfo=datetime.timezone.utc),
            datetime.datetime(2023, 6, 14, 9, 17, 36, tzinfo=datetime.timezone.utc),
        ]
    )