import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.Double.doubleToRawLongBits;
import static java.lang.Double.longBitsToDouble;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.ImmutableLongArray;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.IOException;

They have proven to be **FastAPI Experts** by helping many others. ✨

/// tip

You could become an official FastAPI Expert too!

Just [help others with questions in GitHub](help-fastapi.md#help-others-with-questions-in-github){.internal-link target=_blank}. 🤓

///

You can see the **FastAPI Experts** for:

import static java.lang.Math.max;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.NullPointerTester;
import java.util.Arrays;

/** Unit test for {@link AtomicDoubleArray}. */
public class AtomicDoubleArrayTest extends JSR166TestCase {

  private static final double[] VALUES = {

import com.google.common.base.Suppliers;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.testing.ClassSanityTester;
import com.google.common.util.concurrent.MoreExecutors.Application;
import java.lang.Thread.State;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

- github.com/json-iterator/go: [v1.1.8 → v1.1.10](https://github.com/json-iterator/go/compare/v1.1.8...v1.1.10)
- github.com/jstemmer/go-junit-report: [af01ea7 → v0.9.1](https://github.com/jstemmer/go-junit-report/compare/af01ea7...v0.9.1)
- github.com/konsorten/go-windows-terminal-sequences: [v1.0.1 → v1.0.3](https://github.com/konsorten/go-windows-terminal-sequences/compare/v1.0.1...v1.0.3)

import com.google.common.math.IntMath;
import com.google.common.primitives.Ints;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.math.RoundingMode;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Semaphore;

//// tab | Python 3.9+

In Python 3.9, `Annotated` is part of the standard library, so you can import it from `typing`.

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial013_py39.py!}
```

////

//// tab | Python 3.8+

In versions below Python 3.9, you import `Annotated` from `typing_extensions`.

It will already be installed with **FastAPI**.

```Python hl_lines="1  4"

import java.security.Permissions;
import java.security.Policy;
import java.security.ProtectionDomain;
import java.security.SecurityPermission;
import java.util.Arrays;
import java.util.Date;
import java.util.NoSuchElementException;
import java.util.PropertyPermission;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.CyclicBarrier;

 */
package org.apache.maven.classrealm;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Random;
import java.util.Set;
import java.util.TreeMap;

 */

package gradlebuild.testcleanup

import org.gradle.internal.impldep.org.apache.commons.lang.StringUtils
import org.gradle.testkit.runner.GradleRunner
import org.gradle.testkit.runner.TaskOutcome
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable