`ModelServer` collates all computation graphs exposed to it (from multiple
`SavedModel`) and executes them in parallel on available executors. Running
TensorFlow in a multitenant design mixes the risks described above with the
inherent ones from multitenant configurations. The primary areas of concern are
tenant isolation, resource allocation, model sharing and hardware attacks.

### Tenant isolation

### Type Annotations and Tooling { #type-annotations-and-tooling }

First let's see how editors, mypy and other tools would see this.

`BaseUser` has the base fields. Then `UserIn` inherits from `BaseUser` and adds the `password` field, so, it will include all the fields from both models.

We annotate the function return type as `BaseUser`, but we are actually returning a `UserIn` instance.

    void testReadAndXWireFormatWithErrorCode() {
        DummyPlainSMB next = new DummyPlainSMB();
        DummyAndXBlock block = new DummyAndXBlock(next);
        block.errorCode = 1; // any non-zero error code should inhibit chaining
        block.headerStart = 0;

        byte[] buf = new byte[64];
        buf[0] = 4; // wordCount
        buf[1] = 0x42; // andxCommand present
        ServerMessageBlock.writeInt2(50, buf, 3);

     */
    public void store(final User user) {
        if (StringUtil.isBlank(user.getSurname())) {
            user.setSurname(user.getName());
        }

        ComponentUtil.getAuthenticationManager().insert(user);

        userBhv.insertOrUpdate(user, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

    }

    /**
     * Changes the password for a user identified by username.

        CharMappingItem item = new CharMappingItem(42L, new String[] { "input" }, "output");
        assertEquals(42L, item.getId());
    }

    public void test_getCreatedBy_getCreatedTime() {
        // Test inherited methods from DictionaryItem
        CharMappingItem item = new CharMappingItem(1L, new String[] { "input" }, "output");

        // Test basic properties that exist
        assertNotNull(item.getInputs());

        item.setNewInput(null);
        assertEquals("originalword", item.toLineString());
    }

    public void test_getId() {
        // Test getId method inherited from DictionaryItem
        ProtwordsItem item1 = new ProtwordsItem(0, "word");
        assertEquals(0, item1.getId());

        ProtwordsItem item2 = new ProtwordsItem(999, "word");

pkg maps, func All[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0) iter.Seq2[$1, $2] #61900
pkg maps, func Collect[$0 comparable, $1 interface{}](iter.Seq2[$0, $1]) map[$0]$1 #61900
pkg maps, func Insert[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0, iter.Seq2[$1, $2]) #61900
pkg maps, func Keys[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0) iter.Seq[$1] #61900

		// avoid registering commands which are not being built (via
		// go:build tags)
		if command.Name == "" {
			return
		}
		commands = append(commands, command)
		commandsTree.Insert(command.Name)
	}

	findClosestCommands := func(command string) []string {
		var closestCommands []string
		closestCommands = append(closestCommands, commandsTree.PrefixMatch(command)...)

    /**
     * The size in bytes of the input block to the tranformation algorithm.
     */
    private static final int BLOCK_LENGTH = 64; //    = 512 / 8;

    /**
     * 4 32-bit words (interim result)
     */
    private int[] context = new int[4];

    /**
     * Number of bytes processed so far mod. 2 power of 64.
     */
    private long count;

    /**

            insertLogin(user);
        });
    }

    /**
     * Inserts a login record for the given member.
     * Currently this method does nothing.
     *
     * @param member the member to insert a login record for
     */
    protected void insertLogin(final Object member) {
        // nothing
    }

    /**
     * Checks if the current user has permission to access the given resource.