resp.prepare(next);

        verify((RequestWithFileId) next, times(1)).setFileId(eq(fileId));
    }

    @Test
    void prepare_doesNothing_whenNotReceived() {
        Configuration config = Mockito.mock(Configuration.class);
        Smb2CreateResponse resp = new Smb2CreateResponse(config, "x");

        CommonServerMessageBlockRequest next =