// Assert
        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("close() closes when there is a next element and releases handle")
    void explicitClose() throws Exception {
        // Arrange
        stubAcquireReturnsSelf();
        FileEntry initial = entry("x");
        FileEntry[] page1 = new FileEntry[] { entry("y") };

    SESSION_EXPIRED,      // Session timeout
    SERVER_REBOOT,        // Server restart
    HANDLE_EXPIRED,       // Handle timeout reached
    LEASE_BREAK,         // Associated lease broken
    EXPLICIT_CLOSE       // User closed handle
}

public class HandleBreakHandler {
    public void handleBreak(HandleInfo handle, HandleBreakReason reason) {
        switch (reason) {
            case NETWORK_FAILURE: