*
     * @return the severity level of this problem, never {@code null}
     */
    @Nonnull
    Severity getSeverity();

    /**
     * The different severity levels for a problem, in decreasing order.
     *
     * @since 4.0.0
     */
    @Experimental
    enum Severity {
        FATAL, //
        ERROR, //
        WARNING //
    }

import java.util.Optional;
import java.util.function.UnaryOperator;

import org.apache.maven.api.cli.mvn.MavenOptions;
import org.apache.maven.cling.invoker.LayeredOptions;

/**
 * Options that are "layered" by precedence order.
 *
 * @param <O> the specific type of Maven Options that are layered
 */
public class LayeredMavenOptions<O extends MavenOptions> extends LayeredOptions<O> implements MavenOptions {

    /** The ID of the label type. */
    public String id;

    /** The name of the label type. */
    public String name;

    /** The value of the label type. */
    public String value;

    /** The sort order of the label type. */
    public String sortOrder;

    /** The creator of the label type. */
    public String createdBy;

    /** The created time of the label type. */
    public String createdTime;

    @Override
    public Long[] createArray(int length) {
      return new Long[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleLongs extends SampleElements<Long> {
    public SampleLongs() {
      super(0L, 1L, 2L, 3L, 4L);
    }

    @Override
    public Short[] createArray(int length) {
      return new Short[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Short> order(List<Short> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleShorts extends SampleElements<Short> {
    public SampleShorts() {

    @Override
    public Character[] createArray(int length) {
      return new Character[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Character> order(List<Character> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleChars extends SampleElements<Character> {
    public SampleChars() {

    @Override
    public Short[] createArray(int length) {
      return new Short[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Short> order(List<Short> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleShorts extends SampleElements<Short> {
    public SampleShorts() {

     */
    public String boost;

    /**
     * Search criteria: availability status.
     */
    public String available;

    /**
     * Search criteria: sort order.
     */
    public String sortOrder;

    /**
     * Search criteria: creator user.
     */
    public String createdBy;

    /**
     * Search criteria: creation time.
     */

        ChannelInfo second = loadBalancer.selectChannel(mockMessage);

        assertNotNull(first);
        assertNotNull(second);
        // Due to round-robin, should get different channels or same order
        assertTrue(Arrays.asList(channel1, channel2).contains(first));
        assertTrue(Arrays.asList(channel1, channel2).contains(second));
    }

    @Test
    void testLeastLoadedStrategy() {

You can learn more about Strawberry in the [Strawberry documentation](https://strawberry.rocks/).

And also the docs about [Strawberry with FastAPI](https://strawberry.rocks/docs/integrations/fastapi).

## Older `GraphQLApp` from Starlette { #older-graphqlapp-from-starlette }

Previous versions of Starlette included a `GraphQLApp` class to integrate with [Graphene](https://graphene-python.org/).