return new ParameterizedTypeImpl(
        ClassOwnership.JVM_BEHAVIOR.getOwnerType(rawType), rawType, arguments);
  }

  /** Decides what owner type to use for constructing {@link ParameterizedType} from a raw class. */
  private enum ClassOwnership {
    OWNED_BY_ENCLOSING_CLASS {
      @Override
      @Nullable Class<?> getOwnerType(Class<?> rawType) {

    return new ParameterizedTypeImpl(
        ClassOwnership.JVM_BEHAVIOR.getOwnerType(rawType), rawType, arguments);
  }

  /** Decides what owner type to use for constructing {@link ParameterizedType} from a raw class. */
  private enum ClassOwnership {
    OWNED_BY_ENCLOSING_CLASS {
      @Override
      @Nullable Class<?> getOwnerType(Class<?> rawType) {

* 📝 Update includes in `docs/ru/docs/tutorial/query-param-models.md`. PR [#12994](https://github.com/fastapi/fastapi/pull/12994) by [@alejsdev](https://github.com/alejsdev).
* ✏️ Fix typo in README installation instructions. PR [#13011](https://github.com/fastapi/fastapi/pull/13011) by [@dave-hay](https://github.com/dave-hay).