// unless it's actually going to be used; validate() is called for all set method calls, so it
    // needs to be fast.
    // (We could instead generate the message once, when the set is created, but zero is better.)
    if (!validator.get()) {
      throw new IllegalStateException(errorMessage.get());
    }
  }

  /**
   * Invoked on a background thread after the referent has been garbage collected unless security
   * restrictions prevented starting a background thread, in which case this method is invoked when
   * new references are created.
   */
  void finalizeReferent();

You want to have the *path operations* related to your users separated from the rest of the code, to keep it organized.

But it's still part of the same **FastAPI** application/web API (it's part of the same "Python Package").

You can create the *path operations* for that module using `APIRouter`.

### Import `APIRouter` { #import-apirouter }

You import it and create an "instance" the same way you would with the class `FastAPI`:

     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}
     * @throws ToolchainsBuilderException if the project cannot be created
     * @throws IllegalArgumentException if an argument is {@code null} or invalid
     * @see #build(ToolchainsBuilderRequest)
     */
    @Nonnull
    default ToolchainsBuilderResult build(

Sie möchten aber auch, dass sie neue Artikel akzeptiert. Und wenn die Artikel vorher nicht vorhanden waren, werden diese Artikel erstellt und der HTTP-Statuscode 201 „Created“ zurückgegeben.

Um dies zu erreichen, importieren Sie `JSONResponse`, und geben Sie Ihren Inhalt direkt zurück, indem Sie den gewünschten `status_code` setzen:

Но вы также хотите, чтобы она принимала новые элементы. И если элементы ранее не существовали, она создаёт их и возвращает HTTP статус-код 201 «Created».

Чтобы добиться этого, импортируйте `JSONResponse` и верните туда свой контент напрямую, установив нужный вам `status_code`:

{* ../../docs_src/additional_status_codes/tutorial001_an_py310.py hl[4,25] *}

                                    }
                                }
                            },
                        },
                    },
                    "summary": "Create an item",

   * created for them.
   */
  enum NoRecurse implements Feature<@Nullable Void> {
    SUBMAP,
    DESCENDING;

    @Override
    public Set<Feature<? super @Nullable Void>> getImpliedFeatures() {
      return emptySet();
    }
  }

  /**
   * Creates a suite whose map has some elements filtered out of view.
   *

     */
    protected interface DefaultQueryBuilderFunction {
        /**
         * Applies the function to create a query builder for the specified field and boost.
         * @param field The field name.
         * @param boost The boost value.
         * @return The created query builder.
         */
        QueryBuilder apply(String field, float boost);
    }

    /**

* Then also comment what you tried, that way I'll know that you checked it. 🤓

## Create a Pull Request { #create-a-pull-request }

You can [contribute](contributing.md){.internal-link target=_blank} to the source code with Pull Requests, for example:

* To fix a typo you found on the documentation.