verify(enc, times(1)).decryptMessage(eq(new byte[] { 5 }));
    }

    @Test
    @DisplayName("getTransport returns acquired transport instance")
    void testGetTransportAcquire() {
        SmbSessionImpl session = newSession();
        clearInvocations(transport);
        SmbTransportImpl t = session.getTransport();
        assertSame(transport, t);