K key = (K) stream.readObject();
      @SuppressWarnings("unchecked")
      V value = (V) stream.readObject();
      /*
       * requireNonNull is safe for a properly serialized multimap: We've already inserted a
       * collection for each key that we expect.
       */
      requireNonNull(map.get(key)).add(value);
    }
    setMap(map);
  }

  private static final class MultimapIterationChain<

				} else {
					err = err1
				}
			} else if r.hash.Sum32() != r.f.CRC32 {
				err = ErrChecksum
			}
		} else {
			// If there's not a data descriptor, we still compare
			// the CRC32 of what we've read against the file header
			// or TOC's CRC32, if it seems like it was set.
			if r.f.CRC32 != 0 && r.hash.Sum32() != r.f.CRC32 {
				err = ErrChecksum
			}
		}
	}
	r.err = err
	return
}

                    log.debug("Reusing existing lease for path: {}", path);
                    return existingKey;
                }
            }

            // Check if we've reached max leases
            int maxLeases = context.getConfig().getMaxLeases();
            if (maxLeases > 0 && leases.size() >= maxLeases) {
                // Clean up oldest leases
                evictOldestLeases(1);

        // Move the received data to the read buffer to the reader can read it. If this source has
        // been closed since this read began we must discard the incoming data and tell the
        // connection we've done so.
        withLock {
          if (closed) {
            receiveBuffer.clear()
          } else {
            val wasEmpty = readBuffer.size == 0L
            readBuffer.writeAll(receiveBuffer)

  }

  /**
   * This test causes two connections to become available simultaneously, one from a TCP connect and
   * one from the pool. We must take the pooled connection because by taking it from the pool, we've
   * fully acquired it.
   *
   * This test yields threads to force the decision of plan1 to be deliberate and not lucky. In
   * particular, we set up this sequence of events:
   *
   *  1. take plan 0

              ? new Cancellation(
                  mayInterruptIfRunning, new CancellationException("Future.cancel() was called."))
              /*
               * requireNonNull is safe because we've initialized these if
               * !GENERATE_CANCELLATION_CAUSES.
               *
               * TODO(cpovirk): Maybe it would be cleaner to define a CancellationSupplier interface

Tiene los mismos campos que `HeroBase`, por lo que no incluirá `secret_name`.

Por fin, la identidad de nuestros héroes está protegida! 🥷

También vuelve a declarar `id: int`. Al hacer esto, estamos haciendo un **contrato** con los clientes de la API, para que siempre puedan esperar que el `id` esté allí y sea un `int` (nunca será `None`).

/// tip | Consejo

### Étape 3 : créer un « chemin d’accès » { #step-3-create-a-path-operation }

#### Chemin { #path }

« Chemin » fait ici référence à la dernière partie de l’URL à partir du premier `/`.

Donc, dans une URL telle que :

```
https://example.com/items/foo
```

... le chemin serait :

```
/items/foo
```

/// info

Un « chemin » est aussi couramment appelé « endpoint » ou « route ».

      this.size = 0;
    }

    /*
     * Expand the absolute capacity of the builder so it can accept at least the specified number of
     * elements without being resized. Also, if we've already built a collection backed by the
     * current array, create a new array.
     */
    private void ensureRoomFor(int newElements) {
      @Nullable Object[] contents = this.contents;

    }
  }

  private void recurse(int level) {
    // We're going to reuse the stimuli array 3^steps times by overwriting it
    // in a recursive loop.  Sneaky.
    if (level == stimuli.length) {
      // We've filled the array.
      compareResultsForThisListOfStimuli();
    } else {
      // Keep recursing to fill the array.
      for (Stimulus<E, ? super I> stimulus : getStimulusValues()) {
        stimuli[level] = stimulus;