### Crea una clase `Enum`

Importa `Enum` y crea una sub-clase que herede desde `str` y desde `Enum`.

Al heredar desde `str` la documentación de la API podrá saber que los valores deben ser de tipo `string` y podrá mostrarlos correctamente.

Luego crea atributos de clase con valores fijos, que serán los valores disponibles válidos:

```Python hl_lines="1  6-9"

* <a href="https://github.com/encode/uvicorn/blob/master/uvicorn/middleware/proxy_headers.py" class="external-link" target="_blank">Uvicorn's `ProxyHeadersMiddleware`</a>
* <a href="https://github.com/florimondmanca/msgpack-asgi" class="external-link" target="_blank">MessagePack</a>

    String getLanguage();

    /**
     * Specifies if the artifact contains java classes and can be added to the classpath.
     * Whether the artifact should be added to the classpath depends on other
     * dependency properties.
     *
     * @return if the artifact can be added to the class path
     *
     * @deprecated A value of {@code true} does not mean that the dependency should

    }

    private boolean isOverrideMethod(JApiCompatibility member) {
        return member instanceof JApiMethod && isOverride((JApiMethod) member);
    }

    /**
     * Kotlin file-facade classes can't have kdoc comments.
     */
    private boolean isKotlinFileFacadeClass(JApiCompatibility member) {

  <defaults>
    <default>
      <key>package</key>
      <value>org.apache.maven.settings</value>
    </default>
  </defaults>
  <classes>
    <class java.clone="deep">
      <name>TrackableBase</name>
      <version>1.0.0+</version>
      <description>
        Common base class that contains code to track the source for this instance.
      </description>
      <codeSegments>
        <codeSegment>

 * is a thin wrapper around {@link InetAddresses} and {@link InternetDomainName}; the unit tests for
 * those classes explore numerous corner cases. The intent here is to confirm that everything is
 * wired up properly.
 *
 * @author Craig Berry
 */
public final class HostSpecifierTest extends TestCase {

  private static final ImmutableList<String> GOOD_IPS =

 * is a thin wrapper around {@link InetAddresses} and {@link InternetDomainName}; the unit tests for
 * those classes explore numerous corner cases. The intent here is to confirm that everything is
 * wired up properly.
 *
 * @author Craig Berry
 */
public final class HostSpecifierTest extends TestCase {

  private static final ImmutableList<String> GOOD_IPS =

        dst[dstIndex++] = (byte)(( byteCount >> 8 ) & 0xFF );
        dstIndex += byteCount;

        /* Normally, without intervention everything would batch
         * with everything else. If the below clause evaluates true
         * the andx command will not be written and therefore the
         * response will not read a batched command and therefore
         * the 'received' member of the response object will not

    assertEquals("abc.d.Abc", ClassPath.getClassName("abc/d/Abc.class"));
  }

  public void testResourceInfo_of() {
    assertEquals(ClassInfo.class, resourceInfo(ClassPathTest.class).getClass());
    assertEquals(ClassInfo.class, resourceInfo(ClassPath.class).getClass());
    assertEquals(ClassInfo.class, resourceInfo(Nested.class).getClass());
  }

  public void testGetSimpleName() {

    // fail and will need to be rewritten.

    Class<?> frqC = FinalizableReferenceQueue.class;
    Class<?> sepFrqC = sepLoader.loadClass(frqC.getName());
    assertNotSame(frqC, sepFrqC);
    // Check the assumptions above.

    // FRQ tries to load the Finalizer class (for the reference-collecting thread) in a few ways.
    // If the class is accessible to the system ClassLoader (ClassLoader.getSystemClassLoader())