//   error: An error if the statement preparation fails.
	New(ctx context.Context, key string, isTransaction bool, connPool ConnPool, locker sync.Locker) (*Stmt, error)

	// Keys returns a slice of all cache keys in the store.
	Keys() []string

	// Get retrieves a Stmt object from the store based on the given key.
	// Parameters:
	//   key: The key used to look up the Stmt object.
	// Returns:

  }

  @Override
  public void invalidate(Object key) {
    throw new UnsupportedOperationException();
  }

  /**
   * @since 11.0
   */
  @Override
  // For discussion of <? extends Object>, see getAllPresent.
  public void invalidateAll(Iterable<? extends Object> keys) {
    for (Object key : keys) {
      invalidate(key);
    }
  }

  @Override
  public void invalidateAll() {

    int[] entries = requireEntries();
    @Nullable Object[] keys = requireKeys();
    @Nullable Object[] values = requireValues();
    int srcIndex = size() - 1;
    if (dstIndex < srcIndex) {
      // move last entry to deleted spot
      Object key = keys[srcIndex];
      keys[dstIndex] = key;
      values[dstIndex] = values[srcIndex];
      keys[srcIndex] = null;
      values[srcIndex] = null;

                parameters.taskPathToReports = globalExtension.taskPathToReports.map { taskPathToReportsInExtension ->
                    (taskPathToReportsInExtension.keys + taskPathToReports.keys).associateWith {
                        taskPathToReportsInExtension.getOrDefault(it, emptyList()) + taskPathToReports.getOrDefault(it, emptyList())
                    }
                }
            }

      }
    };
  }

  /**
   * Returns an immutable map whose keys are the distinct elements of {@code keys} and whose value
   * for each key was computed by {@code valueFunction}. The map's iteration order is the order of
   * the first appearance of each key in {@code keys}.
   *
   * <p>When there are multiple instances of a key in {@code keys}, it is unspecified whether {@code

      }
    };
  }

  /**
   * Returns an immutable map whose keys are the distinct elements of {@code keys} and whose value
   * for each key was computed by {@code valueFunction}. The map's iteration order is the order of
   * the first appearance of each key in {@code keys}.
   *
   * <p>When there are multiple instances of a key in {@code keys}, it is unspecified whether {@code

      return;
    }

    Set<K> keys = map.keySet();
    K key = keys.iterator().next();
    if (supportsRemove) {
      int initialSize = map.size();
      keys.remove(key);
      assertEquals(initialSize - 1, map.size());
      assertFalse(map.containsKey(key));
    } else {
      assertThrows(UnsupportedOperationException.class, () -> keys.remove(key));
    }
    assertInvariants(map);
  }

   * equal.
   */
  boolean areEqual();

  /**
   * Returns an unmodifiable map containing the entries from the left map whose keys are not present
   * in the right map.
   */
  Map<K, V> entriesOnlyOnLeft();

  /**
   * Returns an unmodifiable map containing the entries from the right map whose keys are not
   * present in the left map.
   */
  Map<K, V> entriesOnlyOnRight();

  /**

    return (ImmutableMultiset<K>) super.keys();
  }

  @Override
  ImmutableMultiset<K> createKeys() {
    return new Keys();
  }

  @SuppressWarnings("serial") // Uses writeReplace, not default serialization
  @WeakOuter
  private final class Keys extends ImmutableMultiset<K> {
    @Override
    public boolean contains(@Nullable Object object) {
      return containsKey(object);
    }

You will learn more about adding extra information later in the docs, when learning to declare examples.

/// warning

Extra keys passed to `Field` will also be present in the resulting OpenAPI schema for your application.
As these keys may not necessarily be part of the OpenAPI specification, some OpenAPI tools, for example [the OpenAPI validator](https://validator.swagger.io/), may not work with your generated schema.