log.debug("Switching tree");
            if (t != null) {
                log.debug("Acquired tree on switch " + t);
                t.acquire();
                this.treeAcquired = true;
            } else {
                this.treeAcquired = false;
            }

            this.tree = t;
            if ((old != null) && wasAcquired) {
                // release

                        // Get or create tree
                        SmbTreeImpl tree = session.getSmbTree(share, null);
                        assertNotNull(tree, "Tree should not be null");

                        // Verify we can acquire the tree
                        tree.acquire();
                        successCount.incrementAndGet();

    }

    @Override
    public boolean equals(final Object obj) {
        if (obj instanceof final SmbTreeImpl tree) {
            return matches(tree.share, tree.service);
        }
        return false;
    }

    public SmbTreeImpl acquire() {
        return acquire(true);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTree#unwrap(java.lang.Class)
     */

            try {
                if (this.treeConnection != null) {
                    // Release the tree connection if possible
                    log.debug("Releasing tree connection during emergency cleanup");
                }
            } catch (Exception e) {
                log.debug("Error releasing tree connection during emergency cleanup", e);
            }

        this.options = options;
        this.tree = tree.acquire();
        this.tree_num = tree.getTreeId();

        if (cfg.isTraceResourceUsage()) {
            this.creationBacktrace = Thread.currentThread().getStackTrace();
        } else {
            this.creationBacktrace = null;
        }
    }

    /**
     * @param cfg
     * @param fid
     * @param tree
     * @param unc
     * @param options

        // Session starts with usage count > 0
        assertTrue(session.isInUse(), "Session should be in use initially");

        // Create and release trees
        SmbTreeImpl tree = session.getSmbTree("share1", null);
        assertNotNull(tree, "Tree should be created");
        tree.release();

        // Release the session (back to initial state)
        session.release();

        UniAddress addr = getAddress();

        if (tree != null) {
            trans = tree.session.transport;
        } else {
            trans = SmbTransport.getSmbTransport(addr, url.getPort());
            tree = trans.getSmbSession(auth).getSmbTree(share, null);
        }

        final String hostName = getServerWithDfs();
        tree.inDomainDfs = dfs.resolve(hostName, tree.share, null, auth) != null;

        SmbTreeInternal tree = mock(SmbTreeInternal.class);

        when(mockTransport.unwrap(SmbTransportInternal.class)).thenReturn(internal);
        when(internal.getSmbSession(eq(ctx), eq("server.test"), isNull())).thenReturn(session);
        when(session.unwrap(SmbSessionInternal.class)).thenReturn(session);
        when(session.getSmbTree(eq("IPC$"), isNull())).thenReturn(tree);

                // Emergency cleanup of trees
                if (this.trees != null) {
                    try {
                        // Clear all tree references
                        for (SmbTreeImpl tree : this.trees) {
                            try {
                                // Force release trees during emergency cleanup
                                tree.release();

For this, we use `security_scopes.scopes`, that contains a `list` with all these scopes as `str`.

{* ../../docs_src/security/tutorial005_an_py310.py hl[130:136] *}

## Dependency tree and scopes { #dependency-tree-and-scopes }

Let's review again this dependency tree and the scopes.