for (Field field : HttpHeaders.class.getDeclaredFields()) {
      /*
       * Coverage mode generates synthetic fields.  If we ever add private
       * fields, they will cause similar problems, and we may want to switch
       * this check to isAccessible().
       */
      if (!field.isSynthetic() && field.getType() == String.class) {
        builder.add(field);
      }
    }
    return builder.build();
  }

# Templates { #templates }

You can use any template engine you want with **FastAPI**.

A common choice is Jinja2, the same one used by Flask and other tools.

There are utilities to configure it easily that you can use directly in your **FastAPI** application (provided by Starlette).

## Install dependencies { #install-dependencies }

We'll explain everything via an example. Let's say you make some changes on your branch `myTestBranch`
(we highly recommend to name this branch without prefix and hyphen (`-`) because it's used to generate build type ID) and want to
test these changes without affecting `master`/`release` pipeline. Here are the instructions.

      // the result will definitely fit into a long
      long result = 1;
      for (int i = n1 + 1; i <= n2; i++) {
        result *= i;
      }
      return BigInteger.valueOf(result);
    }

    /*
     * We want each multiplication to have both sides with approximately the same number of digits.
     * Currently, we just divide the range in half.
     */
    int mid = (n1 + n2) >>> 1;

import org.codehaus.plexus.components.interactivity.PrompterException;
import org.eclipse.sisu.Priority;

/**
 * This class is injected into any legacy component that would want to use legacy "Plexus Interactivity API".
 * It simply delegates to Maven4 API {@link org.apache.maven.api.services.Prompter}.
 */
@Experimental
@Named
@Singleton
@Priority(10)

	if err = l.Close(); err != nil {
		t.Fatal(err)
	}

	// try lock the unlocked file
	dupl, err := LockedOpenFile(f.Name(), os.O_WRONLY|os.O_CREATE, 0o600)
	if err != nil {
		t.Errorf("err = %v, want %v", err, nil)
	}

	// blocking on locked file
	locked := make(chan struct{}, 1)
	go func() {
		bl, blerr := LockedOpenFile(f.Name(), os.O_WRONLY, 0o600)
		if blerr != nil {
			t.Error(blerr)
			return

}

func dummyRequestValidate(r *http.Request) error {
	return nil
}

func dummyTokenValidate(token string) error {
	if token == "debug" {
		return nil
	}
	return fmt.Errorf("invalid token. want empty, got %s", token)
}

func dummyNewToken() string {
	return "debug"

}

extensions.create<PluginPublishExtension>("pluginPublish", gradlePlugin)

tasks.validatePlugins {
    enableStricterValidation = true
}

// Remove gradleApi() and gradleTestKit() as we want to compile/run against Gradle modules
// TODO consider splitting `java-gradle-plugin` to provide only what's necessary here
configurations.all {
    withDependencies {
        remove(project.dependencies.gradleApi())

    private RepositorySystem repoSystem;

    @Inject
    private LegacySupport legacySupport;

    private Map<Object, MergeableMetadata> relatedMetadata = new ConcurrentHashMap<>();

    /**
     * @deprecated we want to use the artifact method only, and ensure artifact.file is set
     *             correctly.
     */
    @Deprecated
    @Override
    public void deploy(
            String basedir,
            String finalName,

<img src="/img/tutorial/path-operation-configuration/image01.png">

### Tags with Enums { #tags-with-enums }

If you have a big application, you might end up accumulating **several tags**, and you would want to make sure you always use the **same tag** for related *path operations*.

In these cases, it could make sense to store the tags in an `Enum`.

**FastAPI** supports that the same way as with plain strings: