warnings.simplefilter("always")
        client.get("/openapi.json")
        assert len(w) >= 2
        duplicate_warnings = [
            warning for warning in w if issubclass(warning.category, UserWarning)
        ]
        assert len(duplicate_warnings) > 0

    }

    @Override
    public boolean retainAll(Collection<?> c) {
      return standardRetainAll(c);
    }
  }

  /** The inverse of any other {@code AbstractBiMap} subclass. */
  static class Inverse<K extends @Nullable Object, V extends @Nullable Object>
      extends AbstractBiMap<K, V> {
    Inverse(Map<K, V> backward, AbstractBiMap<V, K> forward) {
      super(backward, forward);
    }

import jcifs.smb.RequestParam;


/**
 * This class simplifies communication for protocols that support
 * multiplexing requests. It encapsulates a stream and some protocol
 * knowledge (provided by a concrete subclass) so that connecting,
 * disconnecting, sending, and receiving can be syncronized
 * properly. Apparatus is provided to send and receive requests
 * concurrently.
 */

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[5,140,171] *}

/// info | "Technical Details"

`Security` is actually a subclass of `Depends`, and it has just one extra parameter that we'll see later.

But by using `Security` instead of `Depends`, **FastAPI** will know that it can declare security scopes, use them internally, and document the API with OpenAPI.

    @Override
    @CheckForNull
    public Class<?> loadFinalizer() {
      /*
       * We use URLClassLoader because it's the only concrete class loader implementation in the
       * JDK. If we used our own ClassLoader subclass, Finalizer would indirectly reference this
       * class loader:
       *
       * Finalizer.class -> CustomClassLoader -> CustomClassLoader.class -> This class loader
       *

     * to be passed to the readXxxWireFormat methods. This is
     * actually purer. However, in the case of smb we know the
     * wordCount and byteCount. And since every subclass of
     * ServerMessageBlock would have to perform the same read
     * operation on the input stream, we might as will pull that
     * common functionality into the superclass and read wordCount

      }
      return processor.getResult();
    }

    @Override
    public String toString() {
      return "CharSource.wrap(" + Ascii.truncate(seq, 30, "...") + ")";
    }
  }

  /**
   * Subclass specialized for string instances.
   *
   * <p>Since Strings are immutable and built into the jdk we can optimize some operations
   *
   * <ul>

    def serialize_sequence_value(*, field: ModelField, value: Any) -> Sequence[Any]:
        origin_type = (
            get_origin(field.field_info.annotation) or field.field_info.annotation
        )
        assert issubclass(origin_type, sequence_types)  # type: ignore[arg-type]
        return sequence_annotation_to_type[origin_type](value)  # type: ignore[no-any-return]

    def get_missing_field_error(loc: Tuple[str, ...]) -> Dict[str, Any]:

       * more information, see the comments in that class.
       *
       * We already know that that's how it behaves, and subclasses of Converter can't change that
       * behavior. So there's no sense in making all subclass authors exclude the method from any
       * NullPointerTester tests that they have.
       */
      ignoredMembers.add(Converter.class.getMethod("apply", Object.class));
    } catch (NoSuchMethodException shouldBeImpossible) {

   * Returns a serializable form of this object. Non-public subclasses should not override this
   * method. Publicly-accessible subclasses must override this method and should return a subclass
   * of SerializedForm whose readResolve() method returns objects of the subclass type.
   */
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new SerializedForm<>(this);
  }