human
Solve the following python programming problem given the following code:
@ fixture (scope = 'module') 
def protocol_fake(request) : 
    uuid4_patcher = patch ('uuid.uuid4') 
    uuid4_mock = uuid4_patcher.start () 
    uuid4_mock.return_value = uuid.UUID ('11111111-1111-1111-1111-111111111111') 
    from winrm.protocol import Protocol 
    protocol_fake = Protocol (endpoint = 'http://windows-host:5985/wsman', transport = 'plaintext', username = 'john.smith', password = 'secret') 
    protocol_fake.transport = TransportStub () 
    def uuid4_patch_stop() : 
        uuid4_patcher.stop () 
request.addfinalizer (<MASK>) 
    return protocol_fake 
    
    Given the code above, what is a proper replacement for <MASK>? Choose among: uuid4_mock, uuid4_patcher, protocol_fake, request
assistant
#Here is a proper replacement for <MASK>.
def uuid4_patch_stop(