@GwtIncompatible // NavigableSet
  @Override
  public ContiguousSet<C> tailSet(C fromElement, boolean inclusive) {
    return tailSetImpl(checkNotNull(fromElement), inclusive);
  }

  /*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

        // Perform the upgrade logic
        int result = doUpgrade(context, targetModel, pomMap);

        // Save modifications if this is an apply goal
        if (shouldSaveModifications() && result == 0) {
            saveModifications(context, pomMap);
        }

        return result;
    }

    /**
     * Performs the upgrade logic using the strategy pattern.

  @GwtIncompatible // NavigableSet
  @Override
  public ContiguousSet<C> tailSet(C fromElement, boolean inclusive) {
    return tailSetImpl(checkNotNull(fromElement), inclusive);
  }

  /*
   * These methods perform most headSet, subSet, and tailSet logic, besides parameter validation.
   */
  @SuppressWarnings("MissingOverride") // Supermethod does not exist under GWT.
  abstract ContiguousSet<C> headSetImpl(C toElement, boolean inclusive);

            }

            // Note: resourceLoc is final, cannot be set to null
            // Clear other mutable references would go here

        } catch (Exception e) {
            log.error("Failed to perform emergency tree handle cleanup", e);
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTreeHandle#getRemoteHostName()
     */
    @Override

            // Read again - should return fresh value (no caching in current implementation)
            assertEquals("externally.modified", wrapperProps.getProperty("initial.key"));

            // Now perform a write operation
            wrapperProps.setProperty("new.key", "new.value");

            // Read the initial key again - should return the current value

                } else if (ModelVersionUtils.canUpgrade(currentVersion, targetModelVersion)) {
                    context.action("Upgrading from " + currentVersion + " to " + targetModelVersion);

                    // Perform the actual upgrade
                    context.indent();
                    try {
                        Document upgradedDocument =

            if (!holder.closed && holder.getAge() > maxResourceAge) {
                reportPotentialLeak(holder);
            }
        }
    }

    /**
     * Perform automatic cleanup of abandoned resources
     */
    public void performCleanup() {
        if (!autoCleanupEnabled) {
            return;
        }

        int cleaned = 0;

    }

    @Test
    @DisplayName("EmptyIterator should maintain state after all operations")
    void testStateConsistencyAfterOperations() {
        // When - perform various operations
        assertFalse(emptyIterator.hasNext(), "Initial hasNext check");
        assertNull(emptyIterator.next(), "Initial next call");

        emptyIterator.remove();

 * operations.
 *
 * <p>Certain cache configurations will result in the accrual of periodic maintenance tasks which
 * will be performed during write operations, or during occasional read operations in the absence of
 * writes. The {@link Cache#cleanUp} method of the returned cache will also perform maintenance, but
 * calling it should not be necessary with a high throughput cache. Only caches built with {@link

```Python
some_variable: PlaneItem | CarItem
```

But if we put that in the assignment `response_model=PlaneItem | CarItem` we would get an error, because Python would try to perform an **invalid operation** between `PlaneItem` and `CarItem` instead of interpreting that as a type annotation.

## List of models { #list-of-models }

The same way, you can declare responses of lists of objects.