```

In response, the self-contained JWT id_token will be returned as shown below.

```
{

# Tutorial - User Guide { #tutorial-user-guide }

This tutorial shows you how to use **FastAPI** with most of its features, step by step.

Each section gradually builds on the previous ones, but it's structured to separate topics, so that you can go directly to any specific one to solve your specific API needs.

It is also built to work as a future reference so you can come back and see exactly what you need.

## Run the code { #run-the-code }

import java.io.IOException;
import java.io.OutputStream;

import org.codelibs.core.exception.IORuntimeException;

/**
 * Utility class for {@link OutputStream} operations.
 *
 * @author shot
 */
public abstract class OutputStreamUtil {

    /**
     * Do not instantiate.
     */
    protected OutputStreamUtil() {
    }

    /**
     * Creates a {@link FileOutputStream}.
     *

 * for use in test code.
 *
 * <p><b>Do not use this interface</b> for public or protected declarations: it is a fig leaf for
 * bad design, and it does not prevent anyone from using the declaration---and experience has shown
 * that they will. If the method breaks the encapsulation of its class, then its internal
 * representation will be hard to change. Instead, use <a

import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.Timeout
import org.junit.jupiter.api.extension.RegisterExtension

@Flaky // STDOUT logging enabled for test
@Timeout(30)
@Tag("Slow")
open class ConnectionListenerTest {
  @RegisterExtension
  val platform = PlatformRule()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop

      UnsignedLong unsignedValue = UnsignedLong.fromLongBits(value);
      assertThat(unsignedValue.toString()).isEqualTo(unsignedValue.bigIntegerValue().toString());
    }
  }

  @GwtIncompatible // too slow
  public void testToStringRadix() {
    for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
      for (long l : TEST_LONGS) {
        UnsignedLong value = UnsignedLong.fromLongBits(l);

There are multiple tools that you can use to create those dependables, and they get integrated into OpenAPI so they are shown in the automatic docs UI, they can be used by automatically generated clients and SDKs, etc.

You can import them from `fastapi.security`:

```python
from fastapi.security import (
    APIKeyCookie,
    APIKeyHeader,

    assertThat(Multimaps.unmodifiableMultimap((Multimap<String, Integer>) immutable))
        .isSameInstanceAs(immutable);
  }

  @GwtIncompatible // slow (~10s)
  public void testUnmodifiableArrayListMultimap() {
    checkUnmodifiableMultimap(
        ArrayListMultimap.<@Nullable String, @Nullable Integer>create(), true);
  }

  @J2ktIncompatible

    }

    /**
     * The CRUD operation mode (create, update, etc.).
     */
    @ValidateTypeFailure
    public Integer crudMode;

    /**
     * The search term for which related queries are shown.
     */
    @Required
    @Size(max = 10000)
    public String term;

    /**
     * The related queries to be suggested (one per line).
     */
    @Required
    @Size(max = 10000)

import java.util.Enumeration;
import java.util.Iterator;

import org.codelibs.core.exception.ClUnsupportedOperationException;

/**
 * Adapter to convert an {@link Enumeration} to an {@link Iterator}.
 *
 * @author shot
 * @param <T> the element type
 */
public class EnumerationIterator<T> implements Iterator<T> {

    private Enumeration<T> enumeration = null;

    /**