```
.
├── app                  # "app" is a Python package
│   ├── __init__.py      # this file makes "app" a "Python package"
│   ├── main.py          # "main" module, e.g. import app.main
│   ├── dependencies.py  # "dependencies" module, e.g. import app.dependencies
│   └── routers          # "routers" is a "Python subpackage"
│   │   ├── __init__.py  # makes "routers" a "Python subpackage"

# Query Parameter Models { #query-parameter-models }

If you have a group of **query parameters** that are related, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

# Cookie Parameter Models { #cookie-parameter-models }

If you have a group of **cookies** that are related, you can create a **Pydantic model** to declare them. 🍪

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

/// tip

     *
     * @param config the configuration
     * @param compressionAlgorithms the supported compression algorithms
     * @param flags compression flags (reserved, should be 0)
     */
    public CompressionNegotiateContext(final Configuration config, final int[] compressionAlgorithms, final int flags) {

The **default** value of the **function parameter** is the **actual default** value, that's more intuitive with Python in general. 😌

    }

    /**
     * Gets the flags for this message.
     *
     * @return the flags
     */
    public final int getFlags() {
        return this.flags;
    }

    /**
     * Adds the specified flags to this message.
     *
     * @param flag the flags to add
     */
    public final void addFlags(final int flag) {
        this.flags |= flag;
    }

    /**

     * @param fid
     * @param tree
     * @param unc
     * @param options
     * @param attrs
     * @param access
     * @param flags
     * @param initialSize
     */
    public SmbFileHandleImpl(final Configuration cfg, final byte[] fid, final SmbTreeHandleImpl tree, final String unc, final int flags,
            final int access, final int attrs, final int options, final long initialSize) {
        this.cfg = cfg;
        this.fileId = fid;

///

## Multiple models { #multiple-models }

Here's a general idea of how the models could look like with their password fields and the places where they are used:

{* ../../docs_src/extra_models/tutorial001_py310.py hl[7,9,14,20,22,27:28,31:33,38:39] *}


/// info

    public void testEncoding() {
        byte[] buffer = new byte[256];
        int encodedSize = context.encode(buffer, 0);

        assertTrue(encodedSize > 8); // Minimum size: count + padding + flags + algorithms
        assertEquals(context.size(), encodedSize);
    }

    @Test
    @DisplayName("Test context decoding")
    public void testDecoding() throws SMBProtocolDecodingException {
        // Encode first

    /**
     * Constructs an SMB2 negotiate request with the specified configuration and security mode.
     *
     * @param config the configuration for this request
     * @param securityMode the security mode flags for negotiation
     */
    public Smb2NegotiateRequest(final Configuration config, final int securityMode) {
        super(config, SMB2_NEGOTIATE);
        this.securityMode = securityMode;