checkValidState(cache);

      assertThrows(NullPointerException.class, () -> entry.setValue(null));
      checkValidState(cache);
    }
  }

  /* ---------------- Local utilities -------------- */

  /** Most of the tests in this class run against every one of these caches. */
  private Iterable<LoadingCache<Object, Object>> caches() {
    // lots of different ways to configure a LoadingCache

/**
 * An unbounded {@linkplain BlockingQueue blocking queue} that uses the same ordering rules as class
 * {@link PriorityQueue} and supplies blocking retrieval operations. While this queue is logically
 * unbounded, attempted additions may fail due to resource exhaustion (causing {@code
 * OutOfMemoryError}). This class does not permit {@code null} elements. A priority queue relying on

        return redirect(getClass());
    }

    // ===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============

    private static OptionalEntity<RelatedContent> getEntity(final CreateForm form, final String username, final long currentTime) {

        return redirect(getClass());
    }

    // ===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============

    private static OptionalEntity<BoostDocumentRule> getEntity(final CreateForm form, final String username, final long currentTime) {

Please replace ``endpoint_url``,``aws_access_key_id``, ``aws_secret_access_key``, ``Bucket`` and ``Key`` with your local setup in this ``select.py`` file.

```py
#!/usr/bin/env/env python3
import boto3

s3 = boto3.client('s3',
                  endpoint_url='http://localhost:9000',
                  aws_access_key_id='minio',

        return getRemoteRepositories();
    }

    protected ArtifactRepository getLocalRepository() throws InvalidRepositoryException {
        File repoDir = new File(getBasedir(), "target/local-repo").getAbsoluteFile();

        return mavenRepositorySystem.createLocalRepository(repoDir);
    }

    protected class ProjectBuilder {
        private MavenProject project;

    @Override
    public ArtifactRepository createDefaultLocalRepository() throws InvalidRepositoryException {
        return createLocalRepository(
                new File(System.getProperty("basedir", "."), "target/local-repo").getAbsoluteFile());
    }

    @Override
    public ArtifactRepository createDefaultRemoteRepository() throws InvalidRepositoryException {
        return new MavenArtifactRepository(

    requireLinks()[i] = value;
  }

  /*
   * We don't define getPredecessor+getSuccessor and setPredecessor+setSuccessor here because
   * they're defined above -- including logic to add and subtract 1 to map between the values stored
   * in the predecessor/successor arrays and the indexes in the elements array that they identify.
   */

        assertTrue(DefaultMirrorSelector.isExternalRepo(getRepo("foo", "http://192.168.101.1")));
        assertTrue(DefaultMirrorSelector.isExternalRepo(getRepo("foo", "http://")));
        // these are local
        assertFalse(DefaultMirrorSelector.isExternalRepo(getRepo("foo", "http://localhost:8080")));
        assertFalse(DefaultMirrorSelector.isExternalRepo(getRepo("foo", "http://127.0.0.1:9090")));

   */
  /*
   * TODO: improve this and other implementations and move out of this framework
   * for wider use
   *
   * TODO: could we incorporate the overriding logic from AbstractListTester, by
   * examining whether the features include KNOWN_ORDER?
   */
  protected void expectContents(Collection<E> expected) {
    assertEqualIgnoringOrder(expected, actualContents());
  }