# Body - Nested Models

With **FastAPI**, you can define, validate, document, and use arbitrarily deeply nested models (thanks to Pydantic).

## List fields

You can define an attribute to be a subtype. For example, a Python `list`:

//// tab | Python 3.10+

```Python hl_lines="12"
{!> ../../docs_src/body_nested_models/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="14"

      Key key2 = new Key(2);
      String value2 = key2.toString();
      assertSame(value1, cache.getUnchecked(key1));
      assertSame(value2, cache.getUnchecked(key2));
      cache.invalidate(key1);
      assertFalse(cache.asMap().containsKey(key1));
      assertTrue(cache.asMap().containsKey(key2));
      assertEquals(1, cache.size());
      assertEquals(ImmutableSet.of(key2), cache.asMap().keySet());

    else:
        authenticate_value = "Bearer"
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": authenticate_value},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")

    else:
        authenticate_value = "Bearer"
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": authenticate_value},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")

    return encoded_jwt


async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": "Bearer"},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")
        if username is None:

     */
    protected BuildSummary(MavenProject project, long execTime, long wallTime) {
        this.project = Objects.requireNonNull(project, "project cannot be null");
        // TODO Validate for < 0?
        this.execTime = execTime;
        this.wallTime = wallTime;
    }

    /**
     * Gets the project being summarized.
     *
     * @return The project being summarized, never {@code null}.

  // BoundObjectRef is a reference to an object that the token will be bound to.
  // The token will only be valid for as long as the bound object exists.
  // NOTE: The API server's TokenReview endpoint will validate the
  // BoundObjectRef, but other audiences may not. Keep ExpirationSeconds
  // small if you want prompt revocation.
  // +optional
  optional BoundObjectReference boundObjectRef = 3;
}

func TestObjectNewMultipartUpload(t *testing.T) {
	if runtime.GOOS == globalWindowsOSName {
		t.Skip()
	}
	ExecObjectLayerTest(t, testObjectNewMultipartUpload)
}

// Tests validate creation of new multipart upload instance.
func testObjectNewMultipartUpload(obj ObjectLayer, instanceType string, t TestErrHandler) {
	bucket := "minio-bucket"
	object := "minio-object"
	opts := ObjectOptions{}

    @Secured({ ROLE })
    public HtmlResponse editTags(final TagForm form) {
        validate(form, messages -> {}, () -> asEditTagsHtml(form.path, form.name));
        saveToken();
        return asEditTagsHtml(form.path, form.name);
    }

    @Execute
    @Secured({ ROLE })
    public HtmlResponse updateTags(final TagForm form) {
        validate(form, messages -> {}, () -> asEditTagsHtml(form.path, form.name));

fi
##########################################################################################
# End of extension
##########################################################################################

# If specified, validate the SHA-256 sum of the Maven wrapper jar file
wrapperSha256Sum=""
while IFS="=" read -r key value; do
  case "$key" in wrapperSha256Sum)
    wrapperSha256Sum=$value
    break
    ;;
  esac