assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));
    assertFalse(multimap().containsEntry(k0(), v0()));
    assertEmpty(result);

    assertTrue(result.add(v1()));
    assertTrue(result.add(v2()));

    assertContentsAnyOrder(result, v1(), v2());
    assertContentsAnyOrder(multimap().get(k0()), v1(), v2());
    assertTrue(multimap().containsKey(k0()));

      iteratorElements.add(element);
    }
    assertEqualIgnoringOrder(asList(createSamplesArray()), iteratorElements);
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testIterationOrdering() {
    List<E> iteratorElements = new ArrayList<>();
    for (E element : collection) { // uses iterator()
      iteratorElements.add(element);
    }

    for (String entry : Splitter.on(PATH_SEPARATOR.value()).split(JAVA_CLASS_PATH.value())) {
      try {
        try {
          urls.add(new File(entry).toURI().toURL());
        } catch (SecurityException e) { // File.toURI checks to see if the file is a directory
          urls.add(new URL("file", null, new File(entry).getAbsolutePath()));
        }
      } catch (MalformedURLException e) {

        project.getPlugins().apply(CompileOnlyResolvePlugin.class);
        project.getConfigurations().create("forbiddenApisCliJar");
        project.getDependencies().add("forbiddenApisCliJar", "de.thetaphi:forbiddenapis:3.1");
        Configuration jdkJarHellConfig = project.getConfigurations().create(JDK_JAR_HELL_CONFIG_NAME);

import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link StatsAccumulator}. This tests the stats methods for instances built with {@link
 * StatsAccumulator#add} and {@link StatsAccumulator#addAll}, and various error cases of the {@link
 * StatsAccumulator#add} and {@link StatsAccumulator#addAll} methods. For tests of the {@link
 * StatsAccumulator#snapshot} method which returns {@link Stats} instances, see {@link StatsTest}.
 *

        BooleanQuery.Builder innerBuilder = new BooleanQuery.Builder();
        innerBuilder.add(new TermQuery(new Term("content", "inner")), BooleanClause.Occur.SHOULD);

        BooleanQuery.Builder outerBuilder = new BooleanQuery.Builder();
        outerBuilder.add(innerBuilder.build(), BooleanClause.Occur.SHOULD);
        outerBuilder.add(new TermQuery(new Term("content", "outer")), BooleanClause.Occur.SHOULD);

                    && "assistant".equals(history.get(idx + 1).getRole())) {
                turns.add(new int[] { idx, idx + 2 });
                idx += 2;
            } else {
                turns.add(new int[] { idx, idx + 1 });
                idx++;
            }
        }

            for (ProjectBuildingResult result : results) {
                ExceptionSummary child = handle(result);
                if (child != null) {
                    children.add(child);
                }
            }

            message = "The build could not read " + children.size() + " project" + (children.size() == 1 ? "" : "s");
        } else {

                ToolchainModel.newBuilder().type("basic").build();
        toolchainModels.add(basicToolchainModel);
        toolchainModels.add(basicToolchainModel);

        ToolchainModel rareToolchainModel =
                ToolchainModel.newBuilder().type("rare").build();
        toolchainModels.add(rareToolchainModel);

        org.apache.maven.api.Toolchain basic = mock(org.apache.maven.api.Toolchain.class);

      return this;
    }

    /** Adds a key-value mapping to the built multimap if it is not already present. */
    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> put(K key, V value) {
      super.put(key, value);
      return this;
    }

    /**
     * Adds an entry to the built multimap if it is not already present.
     *
     * @since 11.0