@DisplayName("getSessionKey propagates CIFSException from session acquisition")
    void getSessionKey_exception_propagates() throws Exception {
        SmbPipeHandleImpl handle = newHandleWithBasicStubs(0, "\\\\pipe\\\\sess");
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);

        // Use doThrow for unchecked exception wrapping the CIFSException

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