These are the people that:

* [Help others with questions in GitHub](help-fastapi.md#help-others-with-questions-in-github).
* [Create Pull Requests](help-fastapi.md#create-a-pull-request).
* Review Pull Requests, [especially important for translations](contributing.md#translations).
* Help [manage the repository](management-tasks.md) (team members).

All these tasks help maintain the repository.

it if you want it; that you can change the software and use pieces of
it in new free programs; and that you are informed that you can do
these things.

  To protect your rights, we need to make restrictions that forbid
distributors to deny you these rights or to ask you to surrender these
rights.  These restrictions translate to certain responsibilities for
you if you distribute copies of the library or if you modify it.

The most complex problem is building an authentication/authorization provider like those, but **FastAPI** gives you the tools to do it easily, while doing the heavy lifting for you.

///

## **FastAPI** utilities { #fastapi-utilities }

FastAPI provides several tools for each of these security schemes in the `fastapi.security` module that simplify using these security mechanisms.

* **`300 - 399`** are for "Redirection".  Responses with these status codes may or may not have a body, except for `304`, "Not Modified", which must not have one.
* **`400 - 499`** are for "Client error" responses. These are the second type you would probably use the most.
    * An example is `404`, for a "Not Found" response.

    public String queries;

    /**
     * The virtual host for which these related queries apply.
     */
    @Size(max = 1000)
    public String virtualHost;

    /**
     * The username who created these related queries.
     */
    @Size(max = 1000)
    public String createdBy;

    /**
     * The timestamp when these related queries were created.
     */
    @ValidateTypeFailure

<img src="/img/tutorial/extending-openapi/image03.png">

## Change the Theme { #change-the-theme }

The same way you could set the syntax highlighting theme with the key `"syntaxHighlight.theme"` (notice that it has a dot in the middle):

{* ../../docs_src/configure_swagger_ui/tutorial002_py310.py hl[3] *}

That configuration would change the syntax highlighting color theme:

<img src="/img/tutorial/extending-openapi/image04.png">

There is some assistance in the IDE for this plus a lot of validation that is applied at build time and on CI, but it is useful to keep these constraints in mind as well.

See [Gradle runtimes](runtimes.md) for a list of these runtimes and more details.

### Build execution model

    <!-- These packages are duplicated in ide-native from ide, don't require a package-info.java in each place -->
    <suppress checks="JavadocPackage"
              files=".*[/\\]ide-native[/\\]src[/\\]main[/\\]java[/\\]org[/\\]gradle[/\\]plugins[/\\]ide[/\\]api[/\\][^/\\]+"/>

        # [Include]
        # String columns may not be needed
        # to be set these condition-keys basically.
        #; GreaterThan = map:{}
        #; LessThan = map:{}
        #; GreaterEqual = map:{}
        #; LessEqual = map:{}

        # [Exclude]
        # Common columns of String type may not be needed
        # to be set these condition-keys basically.
        #; !NotEqual = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }

{* ../../docs_src/dependencies/tutorial006_an_py310.py hl[19] *}

These dependencies will be executed/solved the same way as normal dependencies. But their value (if they return any) won't be passed to your *path operation function*.

/// tip

Some editors check for unused function parameters, and show them as errors.