}

    @Override
    protected String getItemEndpointSuffix() {
        return ITEM_ENDPOINT_SUFFIX;
    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        final Map<String, Object> requestBody = new HashMap<>();
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {

        }

        public int peekChar() {
            return idx < expression.length() ? expression.charAt(idx) : EOF;
        }

        public int skipChar() {
            return idx < expression.length() ? expression.charAt(idx++) : EOF;
        }

        public String nextToken(char delimiter) {
            int start = idx;

        final int threadCount = 10;
        final Thread[] threads = new Thread[threadCount];
        final FessTimeResourceProvider[] providers = new FessTimeResourceProvider[threadCount];
        final Exception[] exceptions = new Exception[threadCount];

        for (int i = 0; i < threadCount; i++) {
            final int index = i;
            threads[i] = new Thread(() -> {

@RunWith(JUnit4.class)

@NullUnmarked
public final class GraphMutationTest {
  private static final int NUM_TRIALS = 50;
  private static final int NUM_NODES = 100;
  private static final int NUM_EDGES = 1000;
  private static final int NODE_POOL_SIZE = 1000; // must be >> NUM_NODES

  @Test
  public void directedGraph() {
    testGraphMutation(GraphBuilder.directed());
  }

    }

    private void ensureRoomFor(int numberToAdd) {
      int newCount = count + numberToAdd; // TODO(kevinb): check overflow now?
      if (newCount > array.length) {
        array = Arrays.copyOf(array, expandedCapacity(array.length, newCount));
      }
    }

    // Unfortunately this is pasted from ImmutableCollection.Builder.
    private static int expandedCapacity(int oldCapacity, int minCapacity) {
      if (minCapacity < 0) {

    assertThrows(IllegalArgumentException.class, () -> MathPreconditions.checkPositive("int", 0));
  }

  public void testCheckPositive_maxInt() {
    MathPreconditions.checkPositive("int", Integer.MAX_VALUE);
  }

  public void testCheckPositive_minInt() {
    assertThrows(
        IllegalArgumentException.class,
        () -> MathPreconditions.checkPositive("int", Integer.MIN_VALUE));
  }

  public void testCheckPositive_positiveInt() {

        // Test thread safety - multiple threads accessing the same response
        final int THREAD_COUNT = 10;
        Thread[] threads = new Thread[THREAD_COUNT];
        final boolean[] success = new boolean[THREAD_COUNT];

        for (int i = 0; i < THREAD_COUNT; i++) {
            final int index = i;
            threads[i] = new Thread(() -> {
                try {

        var bazar = "bazar"

        var bazool: Boolean = true

        var isFool: Boolean = true

        fun String.fooExt() {}

        fun Int.fooExt() {}

        val String.barExt: String
            get() = "bar"

        var Int.bazarExt: String
            get() = "bar"
            set(value) = Unit

        operator fun String.invoke(p: String, block: String.() -> Unit) = Unit

      assertEquals(2 * i, (int) inverse.get(2 * i + 1));
    }
    for (int i = 0; i < N; i++) {
      int oldValue = bimap.get(2 * i);
      assertEquals(2 * i + 1, (int) bimap.put(2 * i, oldValue - 2));
    }
    for (int i = 0; i < N; i++) {
      assertEquals(2 * i - 1, (int) bimap.get(2 * i));
    }
    for (int i = 0; i < N; i++) {
      assertEquals(2 * i, (int) inverse.get(2 * i - 1));
    }

    if (omitNulls) {
      helper = helper.omitNullValues();
    }
    return helper;
  }

  @Benchmark
  int toString(int reps) {
    int dummy = 0;
    for (int i = 0; i < reps; i++) {
      MoreObjects.ToStringHelper helper = newHelper();
      for (int j = 0; j < dataSize; ++j) {
        dataset.addEntries(helper);
      }
      dummy ^= helper.toString().hashCode();
    }