*
 * <p>A converter always converts {@code null} to {@code null} and non-null references to non-null
 * references. It would not make sense to consider {@code null} and a non-null reference to be
 * "different representations of the same information", since one is distinguishable from
 * <i>missing</i> information and the other is not. The {@link #convert} method handles this null

     */
    static class TestableTransport extends Transport {
        private long nextKey = 1;
        private Long peekedKey = null;
        private IOException sendException = null;
        private IOException recvException = null;
        private boolean connectFails = false;
        private boolean disconnectResult = false;

        @Override

          val (_, nextPlan, failure) = connectResult

          if (failure != null) throw failure
          if (nextPlan != null) {
            routePlanner.deferredPlans.addFirst(nextPlan)
            continue
          }
        }
        return plan.handleSuccess()
      } catch (e: IOException) {
        if (firstException == null) {
          firstException = e
        } else {
          firstException.addSuppressed(e)

    }

    @Override
    public @Nullable Integer next(Integer value) {
      int i = value;
      return (i == Integer.MAX_VALUE) ? null : i + 1;
    }

    @Override
    public @Nullable Integer previous(Integer value) {
      int i = value;
      return (i == Integer.MIN_VALUE) ? null : i - 1;
    }

    @Override
    Integer offset(Integer origin, long distance) {
      checkNonnegative(distance, "distance");

                "hoge.pptx");

        assertContentType("image/jpeg", null, "hoge.jpg");
        assertContentType("image/gif", null, "hoge.gif");

        assertContentType("application/pdf", "extractor/test.pdf", "hoge.pdf");

        assertContentType("application/gzip", "extractor/gz/test.tar.gz", "hoge.tar.gz");

        helper
            .add(SHORT_NAME, "x")
            .add(LONG_NAME, "y")
            .add(SHORT_NAME, null)
            .add(LONG_NAME, null)
            .addValue("z")
            .addValue("")
            .addValue(null)
            .add(SHORT_NAME, Arrays.asList("A"))
            .add(LONG_NAME, Arrays.asList("B"))
            .add(SHORT_NAME, Arrays.asList())

          return input == null ? null : input.charAt(0);
        }
      };

  @Override
  protected Table<String, Integer, Character> create(@Nullable Object... data) {
    Table<String, Integer, String> table = HashBasedTable.create();
    checkArgument(data.length % 3 == 0);
    for (int i = 0; i < data.length; i += 3) {
      String value = (data[i + 2] == null) ? null : (data[i + 2] + "transformed");

  public void testContains_nullNotContainedButQueriesSupported() {
    assertFalse("contains(null) should return false", collection.contains(null));
  }

  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
  public void testContains_nullNotContainedAndUnsupported() {
    expectNullMissingWhenNullUnsupported("contains(null) should return false or throw");
  }

  @CollectionFeature.Require(ALLOWS_NULL_VALUES)

  public void testContains_nullNotContainedButAllowed() {
    assertFalse("containsValue(null) should return false", getMap().containsValue(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testContains_nullNotContainedAndUnsupported() {
    expectNullValueMissingWhenNullValuesUnsupported(
        "containsValue(null) should return false or throw");
  }

  @MapFeature.Require(ALLOWS_NULL_VALUES)

        // Test with null raw data
        int type3 = AvPair.MsvAvFlags;
        byte[] raw3 = null;
        AvPair avPair3 = new AvPair(type3, raw3);

        assertEquals(type3, avPair3.getType(), "Type should match the constructor argument for null raw data.");
        assertNull(avPair3.getRaw(), "Raw data should be null if constructor argument was null.");
    }

    @Test
    void testConstants() {