* Service service} starts, or terminates), should attach {@linkplain Service.Listener service
   * listeners} to each individual service.
   *
   * @author Luke Sandberg
   * @since 15.0 (present as an interface in 14.0)
   */
  public abstract static class Listener {
    /**
     * Called when the service initially becomes healthy.
     *

////

O **FastAPI** chama a classe `CommonQueryParams`. Isso cria uma "instância" dessa classe e é a instância que será passada para o parâmetro `commons` na sua função.

## Anotações de Tipo vs `Depends`

Perceba como escrevemos `CommonQueryParams` duas vezes no código abaixo:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////

     * list that compares as equal to the key.
     *
     * <p>This is equivalent to the behavior of {@link java.util.Collections#binarySearch(List,
     * Object)} when the key isn't present, since {@code ~insertionIndex} is equal to {@code -1 -
     * insertionIndex}.
     */
    INVERTED_INSERTION_INDEX {
      @Override
      public int resultIndex(int higherIndex) {
        return ~higherIndex;

- version range violation
- circular dependency
- artifact missing
- artifact retrieval exception
- md5 checksum doesn't match for local artifact, need to redownload this
- POM doesn't exist for a goal that requires one
- parent POM missing (in both the repository + relative path)
- component not found

Plugins:
- plugin metadata missing
- plugin metadata retrieval problem
- plugin artifact missing
- plugin artifact retrieval problem

        return compareResult == 0;
      } catch (ClassCastException wastNotComparableToOurType) {
        return false;
      }
    }
    return false;
  }

  // Prevent "missing hashCode" warning by explicitly forcing subclasses implement it
  @Override
  public abstract int hashCode();

  /*
   * The implementation neither produces nor consumes any non-null instance of type C, so

* kubectl apply now supports explicitly clearing values not present in the config by setting them to null ([#40630](https://github.com/kubernetes/kubernetes/pull/40630), [@liggitt](https://github.com/liggitt))

     */
    @Nonnull
    List<Project> getProjects();

    /**
     * Returns the plugin context for mojo being executed and the specified
     * {@link Project}, never returns {@code null} as if context not present, creates it.
     *
     * <strong>Implementation note:</strong> while this method return type is {@link Map}, the
     * returned map instance implements {@link java.util.concurrent.ConcurrentMap} as well.
     *

**FastAPI** effectue la conversion de la requête de façon transparente, de sorte que les objets `item` et `user` se trouvent correctement définis.

Il effectue également la validation des données (même imbriquées les unes dans les autres), et permet de les documenter correctement (schéma OpenAPI et documentation auto-générée).

## Valeurs scalaires dans le body

    }

    /** Adds a key-value mapping to the built multimap if it is not already present. */
    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> put(K key, V value) {
      super.put(key, value);
      return this;
    }

    /**
     * Adds an entry to the built multimap if it is not already present.
     *
     * @since 11.0
     */
    @CanIgnoreReturnValue
    @Override

                    ignored);
          }
          notifyFailed(t);
          // requireNonNull is safe now, just as it was above.
          requireNonNull(runningTask).cancel(false); // prevent future invocations.
        } finally {
          lock.unlock();
        }
      }
    }

    private final Runnable task = new Task();

    @Override
    protected final void doStart() {