"""
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

    And this path operation will:

    * Send the invoice to the client.
    * Collect the money from the client.
    * Send a notification back to the API user (the external developer), as a callback.
        * At this point is that the API will somehow send a POST request to the

    <developerConnection>developer-connection</developerConnection>
    <url>repository-url</url>
  </scm>

  <mailingLists>
    <mailingList>
      <name>Maven User List</name>
      <subscribe>subscribe</subscribe>
      <unsubscribe>unsubscribe</unsubscribe>
      <archive>archive</archive>
    </mailingList>
  </mailingLists>

  <developers>
    <developer>
      <name>Jason van Zyl</name>

    <license>
      <name>parent-license</name>
      <url>https://parent.url/license</url>
      <distribution>repo</distribution>
    </license>
  </licenses>

  <developers>
    <developer>
      <name>parent-developer</name>
    </developer>
  </developers>
  <contributors>
    <contributor>
      <name>parent-contributor</name>
    </contributor>
  </contributors>

  <mailingLists>
    <mailingList>

Once the **patch** is successfully applied, developer must run tests to validate the fix that was backported by running following tests, locally.

TFCI_MACOS_CROSS_COMPILE_ENABLE=1
TFCI_MACOS_CROSS_COMPILE_SDK_DEST="tensorflow/tools/toolchains/cross_compile/cc/MacOSX.sdk"
TFCI_MACOS_CROSS_COMPILE_SDK_SOURCE="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"

```Python hl_lines="8-9  11  14"
{!../../../docs_src/middleware/tutorial001.py!}
```

!!! tip
    Keep in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.

!!! note "Technical Details"
    You could also use `from starlette.middleware.cors import CORSMiddleware`.

    Se você quiser ler mais sobre essas codificações e campos de formulário, vá para o <a href="https://developer.mozilla.org/pt-BR/docs/Web/HTTP/Methods/POST" class="external-link" target="_blank"><abbr title="Mozilla Developer Network">MDN</abbr> web docs para <code>POST</code></a>.

!!! warning "Aviso"

## Design

Then I spent some time designing the developer "API" I wanted to have as a user (as a developer using FastAPI).

I tested several ideas in the most popular Python editors: PyCharm, VS Code, Jedi based editors.

By the last <a href="https://www.jetbrains.com/research/python-developers-survey-2018/#development-tools" class="external-link" target="_blank">Python Developer Survey</a>, that covers about 80% of the users.

2. License Grants.

    2.1. The Initial Developer Grant.

    Conditioned upon Your compliance with Section 3.1 below and subject
    to third party intellectual property claims, the Initial Developer
    hereby grants You a world-wide, royalty-free, non-exclusive license:

    (a) under intellectual property rights (other than patent or
    trademark) Licensable by Initial Developer, to use, reproduce,