return ObjectArrays.toArrayImpl(this, other);
  }

  @Override
  public boolean contains(@Nullable Object object) {
    try {
      // This set never contains null.  We need to explicitly check here
      // because some comparator might throw NPE (e.g. the natural ordering).
      return object != null && sortedDelegate.contains(object);
    } catch (ClassCastException e) {
      return false;
    }

 */
@GwtCompatible
@NullUnmarked
final class UrlEscaperTesting {
  /**
   * Helper to assert common expected behaviour of uri escapers. You should call
   * assertBasicUrlEscaper() unless the escaper explicitly does not escape '%'.
   */
  static void assertBasicUrlEscaperExceptPercent(UnicodeEscaper e) {
    // URL escapers should throw null pointer exceptions for null input
    try {
      e.escape((String) null);

 * 2. Direct dependencies should override the scope of dependencyManagement.
 * 3. Direct dependencies should inherit scope from dependencyManagement when
 *    they do not explicitly state a scope.
 *
 */
@Deprecated
@SuppressWarnings("checkstyle:UnusedLocalVariable")
class ProjectInheritanceTest extends AbstractProjectInheritanceTestCase {

      // return condition1 || condition2;
      if (nodeU().equals(other.nodeU())) { // check condition1
        // Here's the tricky bit. We don't have to explicitly check for condition2 in this case.
        // Why? The second half of condition2 requires that nodeV equals other.nodeU.
        // We already know that nodeU equals other.nodeU. Combined with the earlier statement,

      logger.finer(Platform.format("%s: including by default: %s", test, e.getMessage()));
      return true;
    }
    if (suppressedTests.contains(method)) {
      logger.finer(Platform.format("%s: excluding because it was explicitly suppressed.", test));
      return false;
    }
    TesterRequirements requirements;
    try {
      requirements = FeatureUtil.getTesterRequirements(method);
    } catch (ConflictingRequirementsException e) {

     * The default value is empty.
     */
    default Optional<Version> targetVersion() {
        return Optional.empty();
    }

    /**
     * {@return an explicit target path, overriding the default value}.
     * When a target path is explicitly specified, the values of the {@link #module()} and {@link #targetVersion()}
     * elements are not used for inferring the path (they are still used as compiler options however).

   * IllegalArgumentException}.
   */
  public void testBadArguments_badchars() {
    String msg = "Alphanumeric characters are always 'safe' and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

                    notifications.add(notification);
                  }
                })
            .build();
    cache.put(1, 2);

    // explicitly remove the existing value
    cache.asMap().computeIfPresent(1, (key, value) -> null);
    assertThat(notifications).hasSize(1);
    CacheTesting.checkEmpty(cache);

    // ensure no zombie entry remains

                 * created for it because the original is potentially being actively
                 * referenced by other objects. We must populate the existing object's
                 * data explicitly (and carefully).
                 */
                if (!addrFound && queryAddress.hostName.hexCode == hexCode

So, even with the code above that doesn't use Pydantic explicitly, FastAPI is using Pydantic to convert those standard dataclasses to Pydantic's own flavor of dataclasses.

And of course, it supports the same:

* data validation
* data serialization
* data documentation, etc.