@Override
    public void setSession(MavenSession session) {
        AtomicReference<MavenSession> reference = DefaultLegacySupport.SESSION.get();
        if (reference != null) {
            reference.set(null);
        }

        if (session == null && reference != null) {
            DefaultLegacySupport.SESSION.remove();
        } else {
            DefaultLegacySupport.SESSION.set(new AtomicReference<>(session));
        }
    }

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**

     * @return This request, never {@code null}.
     */
    @Override
    MetadataResolutionRequest setOffline(boolean offline);

    /**
     * Gets the artifact to resolve metadata for.
     *
     * @return The artifact to resolve metadata for or {@code null} if not set.
     */
    Artifact getArtifact();

    /**

    if (entry != null && entry.key == key) {
      return entry.value;
    }
    entry = cacheEntry2;
    if (entry != null && entry.key == key) {
      // Promote second cache entry to first so the access pattern
      // [K1, K2, K1, K3, K1, K4...] still hits the cache half the time.
      addToCache(entry);
      return entry.value;
    }
    return null;
  }

  @Override
  void clearCache() {
    super.clearCache();

     *
     * @return The transitive dependencies, never {@code null}.
     */
    List<Dependency> getDependencies();

    /**
     * Gets the dependencies that were successfully resolved.
     *
     * @return The resolved dependencies, never {@code null}.
     */
    List<Dependency> getResolvedDependencies();

    /**

    if (delegate != null) {
      metadata =
          Ints.constrainToRange(size(), CompactHashing.DEFAULT_SIZE, CompactHashing.MAX_SIZE);
      delegate.clear(); // invalidate any iterators left over!
      table = null;
      size = 0;
    } else {
      Arrays.fill(requireKeys(), 0, size, null);
      Arrays.fill(requireValues(), 0, size, null);
      CompactHashing.tableClear(requireTable());

        return LegacyLocalRepositoryManager.overlay(localRepository, legacySupport.getRepositorySession(), null);
    }

    private void injectSession1(RepositoryRequest request, MavenSession session) {
        if (session != null) {
            request.setOffline(session.isOffline());
            request.setForceUpdate(session.getRequest().isUpdateSnapshots());
        }
    }

     * @return map of attribute names to values, never {@code null}
     */
    @Nonnull
    Map<String, String> attributes();

    /**
     * Returns the value of a specific attribute.
     *
     * @param name the name of the attribute to retrieve
     * @return the attribute value, or {@code null} if the attribute doesn't exist
     * @throws NullPointerException if name is null
     */
    @Nullable

            if (authenticator != null) {
                return authenticator.getResponse(responseType);
            }
        }
        return null;
    }

    /**
     * Performs logout operations for the specified user using SSO.
     *
     * @param user The user to logout
     * @return The logout URL from the SSO authenticator, or null if SSO is not available
     */

                async = false;
                next = null;
                received = false;
                error = false;
                verifyFailed = false;
                expiration = null;
                exception = null;
                mid = 0;
                command = 0;
                digest = null;
                response = null;
            }

            @Override