* `datetime.timedelta`:
    * A Python `datetime.timedelta`.
    * In requests and responses will be represented as a `float` of total seconds.
    * Pydantic also allows representing it as a "ISO 8601 time diff encoding", <a href="https://docs.pydantic.dev/latest/concepts/serialization/#custom-serializers" class="external-link" target="_blank">see the docs for more info</a>.
* `frozenset`:

## JavaScript-only settings { #javascript-only-settings }

Swagger UI also allows other configurations to be **JavaScript-only** objects (for example, JavaScript functions).

FastAPI also includes these JavaScript-only `presets` settings:

```JavaScript
presets: [
    SwaggerUIBundle.presets.apis,

import org.lastaflute.web.ruts.multipart.MultipartFormFile;
import org.lastaflute.web.validation.Required;

/**
 * Form for uploading character mapping files to the Fess search engine.
 * Character mapping allows for normalization and transformation of characters during text analysis.
 * This form is used in the admin interface to upload custom character mapping dictionary files.
 */
public class UploadForm {

    /**

 */

package com.google.common.graph;

import java.util.AbstractSet;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * Abstract base class for an incident edges set that allows different implementations of {@link
 * AbstractSet#iterator()}.
 */
abstract class IncidentEdgeSet<N> extends AbstractSet<EndpointPair<N>> {
  final N node;
  final BaseGraph<N> graph;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.di.Named;

/**
 * Service provider interface for registering custom {@link Lifecycle} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional build lifecycles
 * beyond the standard ones provided by Maven (like clean, default, site). Lifecycles define a sequence
 * of phases that can be executed during a build.

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.di.Named;

/**
 * Service provider interface for registering custom {@link PathScope} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional path scopes
 * beyond the standard ones provided by Maven. Path scopes define how dependencies are used
 * in different contexts, such as compilation, testing, or runtime.

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.di.Named;

/**
 * Service provider interface for registering custom {@link Type} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional artifact types
 * beyond the standard ones provided by Maven (like jar, war, pom, etc.). Types define how artifacts

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import org.jspecify.annotations.NullMarked;

/**
 * An {@link ClusterException} is a data structure that allows for some code to "throw multiple
 * exceptions", or something close to it. The prototypical code that calls for this class is
 * presented below:
 *
 * <pre>
 * void runManyThings({@literal List<ThingToRun>} thingsToRun) {

import jcifs.SmbTransportPool;
import jcifs.smb.Handler;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbNamedPipe;

/**
 * A wrapper implementation of CIFSContext that delegates to another context.
 * This class allows for context decoration and customization through delegation.
 *
 * @author mbechler
 */
public class CIFSContextWrapper implements CIFSContext {

    private final CIFSContext delegate;

    assert input.length >= offset + 8;
    // Delegates to the fast (unsafe) version or the fallback.
    return byteArray.getLongLittleEndian(input, offset);
  }

  /**
   * Similar to load64, but allows offset + 8 > input.length, padding the result with zeroes. This
   * has to explicitly reverse the order of the bytes as it packs them into the result which makes
   * it slower than the native version.
   *