@GwtCompatible
public final class Ascii {

  private Ascii() {}

  /* The ASCII control characters, per RFC 20. */
  /**
   * Null ('\0'): The all-zeros character which may serve to accomplish time fill and media fill.
   * Normally used as a C string terminator.
   *
   * <p>Although RFC 20 names this as "Null", note that it is distinct from the C/C++ "NULL"
   * pointer.
   *
   * @since 8.0
   */
  public static final byte NUL = 0;

All the data conversion, validation, documentation, etc. will still work as normally.

That way, we can declare just the differences between the models (with plaintext `password`, with `hashed_password` and without password):

{* ../../docs_src/extra_models/tutorial002_py310.py hl[7,13:14,17:18,21:22] *}

The API docs use **Swagger UI** and **ReDoc**, and each of those need some JavaScript and CSS files.

By default, those files are served from a <abbr title="Content Delivery Network: A service, normally composed of several servers, that provides static files, like JavaScript and CSS. It's commonly used to serve those files from the server closer to the client, improving performance.">CDN</abbr>.

        dst[dstIndex] = (byte) (byteCount & 0xFF);
        dstIndex++;
        dst[dstIndex++] = (byte) (byteCount >> 8 & 0xFF);
        dstIndex += byteCount;

        /* Normally, without intervention everything would batch
         * with everything else. If the below clause evaluates true
         * the andx command will not be written and therefore the

* The API checks that `username` and `password`, and responds with a "token" (we haven't implemented any of this yet).
    * A "token" is just a string with some content that we can use later to verify this user.
    * Normally, a token is set to expire after some time.
        * So, the user will have to log in again at some point later.

    RUNNING,

    /** A service in this state is transitioning to {@link #TERMINATED}. */
    STOPPING,

    /**
     * A service in this state has completed execution normally. It does minimal work and consumes
     * minimal resources.
     */
    TERMINATED,

    /**
     * A service in this state has encountered a problem and may not be operational. It cannot be

part of the Derivative Works; within the Source form or documentation, if 
provided along with the Derivative Works; or, within a display generated by 
the Derivative Works, if and wherever such third-party notices normally 
appear. The contents of the NOTICE file are for informational purposes only 
and do not modify the License. You may add Your own attribution notices 
within Derivative Works that You distribute, alongside or as an addendum to 

   * This is useful if the given service uses daemon threads, and we want to keep the JVM from
   * exiting immediately on shutdown, instead giving these daemon threads a chance to terminate
   * normally.
   *
   * @param service ExecutorService which uses daemon threads
   * @param terminationTimeout how long to wait for the executor to finish before terminating the
   *     JVM

{* ../../docs_src/generate_clients/tutorial002_py310.py hl[21,26,34] *}

### Generate a TypeScript Client with Tags { #generate-a-typescript-client-with-tags }

If you generate a client for a FastAPI app using tags, it will normally also separate the client code based on the tags.

This way, you will be able to have things ordered and grouped correctly for the client code:

<img src="/img/tutorial/generate-clients/image06.png">

The form field name is `scope` (in singular), but it is actually a long string with "scopes" separated by spaces.

Each "scope" is just a string (without spaces).

They are normally used to declare specific security permissions, for example:

* `users:read` or `users:write` are common examples.
* `instagram_basic` is used by Facebook / Instagram.
* `https://www.googleapis.com/auth/drive` is used by Google.