assertFalse(it.hasNext());
        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("advance() path handles fetchMore throwing CIFSException in next()")
    void advanceFetchMoreThrows() throws Exception {
        // Arrange
        stubAcquireReturnsSelf();
        // No results in current page, not done, and fetchMore will throw
        FileEntry initial = entry("one");