public void testRemove_nullKeyQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(null, v3()));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testRemove_nullValueQueriesUnsupported() {
    try {

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.DefaultMavenExecutionResult;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.impl.InternalSession;
import org.apache.maven.internal.impl.DefaultLookup;

    }

    @Test
    void testPerLookupInstantiation() throws Exception {
        String protocol = "perlookup";

        Wagon one = wagonManager.getWagon(protocol);
        Wagon two = wagonManager.getWagon(protocol);

        assertNotSame(one, two);
    }

    private void assertWagon(String protocol) throws Exception {
        Wagon wagon = wagonManager.getWagon(protocol);

                new DefaultProjectBuildingResult("com.example:project2:1.0", new File("project2/pom.xml"), problems2);
        results.add(result2);

        ProjectBuildingException exception = new ProjectBuildingException(results);
        String message = exception.getMessage();

        assertTrue(
                message.contains("3 problems were encountered while processing the POMs (2 errors)"),

                        + MavenProject.EMPTY_PROJECT_VERSION,
                project.getId());
    }

    @Test
    void testClone() throws Exception {
        File f = getFileForClasspathResource("canonical-pom.xml");
        MavenProject projectToClone = getProject(f);

        MavenProject clonedProject = projectToClone.clone();

    assertEquals(null, getResponse(methodName).getResult());
  }

  /**
   * Asserts that a prior call that had caused this thread to block or wait has since returned the
   * expected boolean value.
   */
  public void assertPriorCallReturns(boolean expected, @Nullable String methodName)
      throws Exception {

      public CacheResponse(File cacheDirectory) throws Exception {
        int cacheSize = 10 * 1024 * 1024; // 10 MiB
        Cache cache = new Cache(cacheDirectory, cacheSize);

        client = new OkHttpClient.Builder()
            .cache(cache)
            .build();
      }

      public void run() throws Exception {
        Request request = new Request.Builder()

  }

  @Override
  protected void tearDown() throws Exception {
    classReloader.close();
    Thread.currentThread().setContextClassLoader(oldClassLoader);
    System.clearProperty("guava.concurrent.generate_cancellation_cause");
  }

  public void testCancel_notDoneNoInterrupt() throws Exception {
    Future<?> future = newFutureInstance();
    assertTrue(future.cancel(false));

      throws IOException {
    if (singleByte) {
      for (int i = off; i < off + len; i++) {
        out.write(b[i]);
      }
    } else {
      out.write(b, off, len);
    }
    out.flush(); // for coverage
  }

  // TODO(chrisn): only works if we ensure we have crossed file threshold

  public void testWriteErrorAfterClose() throws Exception {

    @Test
    void testResolveVersionRange() throws Exception {
        // VersionRangeResult resolveVersionRange( RepositorySystemSession session, VersionRangeRequest request )
        //                throws VersionRangeResolutionException;

    }

    @Test
    void testResolveVersion() throws Exception {
        // VersionResult resolveVersion( RepositorySystemSession session, VersionRequest request )