How to use the blacksheep.Header function in blacksheep

def test_http_header_check_equality(name_a, value_a, name_b, value_b, expected_result):
    a = Header(name_a, value_a)
    b = Header(name_b, value_b)

    assert (a == b) == expected_result
    assert (a != b) != expected_result
    assert (b != a) != expected_result

async def fortunes_test(request):
    """Test type 4: Fortunes"""

    connection = await db_pool.acquire()

    try:
        fortunes = await connection.fetch('SELECT * FROM Fortune')
    finally:
        await db_pool.release(connection)

    fortunes.append([0, 'Additional fortune added at request time.'])
    fortunes.sort(key=lambda x: x[1])

    return Response(200, [
        Header(b'Cache-Control', b'no-cache')
    ], content=Content(b'text/html; charset=utf-8', fortune_template.render(fortunes=fortunes).encode('utf8')))

def get_frozen_file_getter(file_path, cache_max_age=12000):
    mime = get_mime_type(file_path)
    size = os.path.getsize(file_path)
    current_etag = str(os.path.getmtime(file_path)).encode()
    headers = [
        Header(b'Last-Modified', unix_timestamp_to_datetime(os.path.getmtime(file_path))),
        Header(b'ETag', current_etag),
        Header(b'Cache-Control', b'max-age=' + str(cache_max_age).encode())
    ]

    head_headers = headers + [
        Header(b'Content-Type', mime),
        Header(b'Content-Length', str(size).encode())
    ]

    data = get_file_data(file_path, size, size_limit=1.049e+7)

    async def frozen_file_getter(request):
        previous_etag = request.if_none_match

        if previous_etag and previous_etag == current_etag:
            return Response(304, headers, None)

def get_frozen_file_getter(file_path, cache_max_age=12000):
    mime = get_mime_type(file_path)
    size = os.path.getsize(file_path)
    current_etag = str(os.path.getmtime(file_path)).encode()
    headers = [
        Header(b'Last-Modified', unix_timestamp_to_datetime(os.path.getmtime(file_path))),
        Header(b'ETag', current_etag),
        Header(b'Cache-Control', b'max-age=' + str(cache_max_age).encode())
    ]

    head_headers = headers + [
        Header(b'Content-Type', mime),
        Header(b'Content-Length', str(size).encode())
    ]

    data = get_file_data(file_path, size, size_limit=1.049e+7)

    async def frozen_file_getter(request):
        previous_etag = request.if_none_match

        if previous_etag and previous_etag == current_etag:
            return Response(304, headers, None)

        if request.method == 'HEAD':

def get_frozen_file_getter(file_path, cache_max_age=12000):
    mime = get_mime_type(file_path)
    size = os.path.getsize(file_path)
    current_etag = str(os.path.getmtime(file_path)).encode()
    headers = [
        Header(b'Last-Modified', unix_timestamp_to_datetime(os.path.getmtime(file_path))),
        Header(b'ETag', current_etag),
        Header(b'Cache-Control', b'max-age=' + str(cache_max_age).encode())
    ]

    head_headers = headers + [
        Header(b'Content-Type', mime),
        Header(b'Content-Length', str(size).encode())
    ]

    data = get_file_data(file_path, size, size_limit=1.049e+7)

    async def frozen_file_getter(request):
        previous_etag = request.if_none_match

        if previous_etag and previous_etag == current_etag:
            return Response(304, headers, None)

def get_frozen_file_getter(file_path, cache_max_age=12000):
    mime = get_mime_type(file_path)
    size = os.path.getsize(file_path)
    current_etag = str(os.path.getmtime(file_path)).encode()
    headers = [
        Header(b'Last-Modified', unix_timestamp_to_datetime(os.path.getmtime(file_path))),
        Header(b'ETag', current_etag),
        Header(b'Cache-Control', b'max-age=' + str(cache_max_age).encode())
    ]

    head_headers = headers + [
        Header(b'Content-Type', mime),
        Header(b'Content-Length', str(size).encode())
    ]

    data = get_file_data(file_path, size, size_limit=1.049e+7)

    async def frozen_file_getter(request):
        previous_etag = request.if_none_match

        if previous_etag and previous_etag == current_etag:
            return Response(304, headers, None)

        if request.method == 'HEAD':
            return Response(200, head_headers, None)

        return Response(200, Headers(headers), Content(mime, data))
    return frozen_file_getter