Just functions that look the same as the *path operation functions*.

But still, it is very powerful, and allows you to declare arbitrarily deeply nested dependency "graphs" (trees).

/// tip

All this might not seem as useful with these simple examples.

But you will see how useful it is in the chapters about **security**.

And you will also see the amounts of code it will save you.

 in a known location. This would also help with developer setup i.e. getting
 new developers up and running. They could run a maven command and have all
 their source trees set up in the same way as their colleagues.

 here's what I do currently in the netbeans part of the mavenide project to
 find the relevant subprojects/sibling projects. I check if the user has

        CustomSmbTree inner = middle.unwrap(CustomSmbTree.class);

        assertNotNull(middle, "Middle tree should not be null");
        assertNotNull(inner, "Inner tree should not be null");
        assertSame(middleTree, middle, "Should return correct middle tree");
        assertSame(innerTree, inner, "Should return correct inner tree");
    }

    /**
     * Test for unwrap with incompatible type.

import jcifs.internal.smb1.trans.nt.NtTransQuerySecurityDesc;
import jcifs.util.transport.TransportException;

/**
 * This class encapsulates the logic for switching tree connections
 *
 * Switching trees can occur either when the tree has been disconnected by failure or idle-timeout - as well as on
 * DFS referrals.
 *
 * @author mbechler
 *
 */
class SmbTreeConnection implements AutoCloseable {

{* ../../docs_src/dependencies/tutorial007_py39.py hl[3,5] *}

## Sub-dependencies with `yield` { #sub-dependencies-with-yield }

You can have sub-dependencies and "trees" of sub-dependencies of any size and shape, and any or all of them can use `yield`.

**FastAPI** will make sure that the "exit code" in each dependency with `yield` is run in the correct order.

    for both GPUs and CPUs.

*   Due to security issues (see section below), all boosted trees code has been
    deprecated. Users should switch to
    [TensorFlow Decision Forests](https://github.com/tensorflow/decision-forests).
    TF's boosted trees code will be eliminated before the branch cut for TF 2.9
    and will no longer be present since that release.

## Security

    /**
     * Property {@code jcifs.smb.client.strictResourceLifecycle} (bool, default false)
     *
     * If enabled, SmbFile instances starting with their first use will hold a reference to their tree.
     * This means that trees/sessions/connections won't be idle-disconnected even if there are no other active
     * references (currently executing code, file descriptors).
     *

  It sounded an excellent plan, no doubt, and very neatly and
simply arranged; the only difficulty was, that she had not the
smallest idea how to set about it; and while she was peering
about anxiously among the trees, a little sharp bark just over
her head made her look up in a great hurry.

  An enormous puppy was looking down at her with large round
eyes, and feebly stretching out one paw, trying to touch her.

    // Test case for the equals method
    @Test
    void testEquals() {
        SmbTreeImpl tree1 = new SmbTreeImpl(session, "SHARE", "A:");
        SmbTreeImpl tree2 = new SmbTreeImpl(session, "SHARE", "A:");
        SmbTreeImpl tree3 = new SmbTreeImpl(session, "OTHER", "A:");
        assertEquals(tree1, tree2);
        assertFalse(tree1.equals(tree3));
    }

    // Test case for the unwrap method
    @Test
    void testUnwrap() {

    @Override
    public void connect() throws IOException {
        try (SmbTreeHandle th = ensureTreeConnected()) {}
    }

    /**
     * Retrieves the tree handle for this SMB resource
     *
     * @return a tree handle
     * @throws CIFSException if the tree connection cannot be established
     */
    public SmbTreeHandle getTreeHandle() throws CIFSException {
        return ensureTreeConnected();
    }