return (ImmutableMap<K, V>) RegularImmutableMap.EMPTY;
  }

  /**
   * Returns an immutable map containing a single entry. This map behaves and performs comparably to
   * {@link Collections#singletonMap} but will not accept a null key or value. It is preferable
   * mainly for consistency and maintainability of your code.
   */
  public static <K, V> ImmutableMap<K, V> of(K k1, V v1) {
    checkEntryNotNull(k1, v1);

        RoutingTable routingTable = rb.build();
        DiscoveryNodes.Builder nb = DiscoveryNodes.builder();
        for (int i = 1; i <= numNodes; i++) {
            nb.add(Allocators.newNode("node" + i, Collections.singletonMap("tag", "tag_" + (i % numTags))));
        }
        initialClusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY))
            .metadata(metadata)

        String indexName = "test";

        BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();
        for (int i = 0; i < num; i++) {
            Map<String, Object> source = Collections.singletonMap("content", "test");
            IndexRequestBuilder indexRequestBuilder = new IndexRequestBuilder(client, IndexAction.INSTANCE);

    return (ImmutableMap<K, V>) RegularImmutableMap.EMPTY;
  }

  /**
   * Returns an immutable map containing a single entry. This map behaves and performs comparably to
   * {@link Collections#singletonMap} but will not accept a null key or value. It is preferable
   * mainly for consistency and maintainability of your code.
   */
  public static <K, V> ImmutableMap<K, V> of(K k1, V v1) {

    // It's a token68 because there isn't a value after it.
    if (!commaPrefixed && (commaSuffixed || exhausted())) {
      result.add(
        Challenge(
          schemeName,
          Collections.singletonMap<String?, String>(null, peek + "=".repeat(eqCount)),
        ),
      )
      peek = null
      continue
    }

    // It's a series of parameter names and values.

        registerClassSafely(kryo, Collections.singletonList(null).getClass());
        registerClassSafely(kryo, Collections.singleton(null).getClass());
        registerClassSafely(kryo, Collections.singletonMap(null, null).getClass());
        registerClassSafely(kryo, Arrays.asList().getClass());
    }

    /**
     * Safely registers a class with Kryo, logging any registration failures at WARN level.
     * <p>

                .thenReturn(basicPrivate);

        List<Toolchain> toolchains =
                toolchainManager.getToolchains(session, "basic", Collections.singletonMap("key", "value"));

        assertEquals(1, toolchains.size());
    }

    @Test
    void testToolchainsForAvailableType() throws Exception {
        // prepare

        this.lifecyclePluginResolver = lifecyclePluginResolver;
        this.standardDelegate = null;
        this.delegates = null;
        this.mojoExecutionConfigurators = Collections.singletonMap("default", new DefaultMojoExecutionConfigurator());
    }

    @Override
    public MavenExecutionPlan calculateExecutionPlan(
            MavenSession session, MavenProject project, List<Task> tasks, boolean setup)

            for (TaskSegment taskSegment : taskSegments) {
                Map<MavenProject, List<MavenProject>> projects = taskSegment.isAggregating()
                        ? Collections.singletonMap(rootProject, allProjects.get(rootProject))
                        : allProjects;

                BuildPlan segment = calculateMojoExecutions(projects, taskSegment.getTasks());
                plan.then(segment);

import static com.google.common.collect.CollectPreconditions.checkNonnegative;
import static com.google.common.collect.NullnessCasts.uncheckedCastNullableTToT;
import static java.lang.Math.ceil;
import static java.util.Collections.singletonMap;
import static java.util.Objects.requireNonNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;