* This does perform a little more work than necessary, so another option is to insert an
   * unchecked cast at some later point:
   *
   * {@snippet :
   * @SuppressWarnings("unchecked") // safe because of ::isInstance check
   * ImmutableList<NewType> result =
   *     (ImmutableList) stream.filter(NewType.class::isInstance).collect(toImmutableList());
   * }

            final Map<String, Object> defaultSettings = defaultSettings();
            initialSettings.forEach((key, value) -> {
                if (value instanceof Collection) {
                    @SuppressWarnings("unchecked")
                    final Collection<Object> collection = (Collection<Object>) value;
                    collection.forEach(element -> arraySettings.add(new Tuple<>(key, element)));

   * bufferSize ≥ k, then we can ignore any elements greater than this value.
   */
  private @Nullable T threshold;

  @SuppressWarnings("unchecked") // TODO(cpovirk): Consider storing Object[] instead of T[].
  private TopKSelector(Comparator<? super T> comparator, int k) {
    this.comparator = checkNotNull(comparator, "comparator");
    this.k = k;

public class UnmodifiableCollectionTests {

  public static void assertMapEntryIsUnmodifiable(Entry<?, ?> entry) {
    try {
      // fine because the call is going to fail without modifying the entry
      @SuppressWarnings("unchecked")
      Entry<?, @Nullable Object> nullableValueEntry = (Entry<?, @Nullable Object>) entry;
      nullableValueEntry.setValue(null);
      fail("setValue on unmodifiable Map.Entry succeeded");

        assertEquals(25L, updated.get(FieldNames.QUERY_FREQ)); // 20 + 5
        assertEquals(20L, updated.get(FieldNames.DOC_FREQ)); // 10 + 10

        @SuppressWarnings("unchecked")
        List<String> tags = (List<String>) updated.get(FieldNames.TAGS);
        assertTrue(tags.contains("existing"));
    }

    @Test
    public void testConcatValues() {

      } catch (Exception e) { // sneaky checked exception
        if (exception == null) {
          exception = e;
        } else {
          exception.addSuppressed(e);
        }
      }
    }
    if (exception != null) {
      // Normally this is a RuntimeException that doesn't need sneakyThrow.
      // But theoretically we could see sneaky checked exception
      sneakyThrow(exception);
    }
  }

                option.converter(new EsTimestampConverter(), timestampFields).excludeWhitespace();
                option.exclude(OpenSearchAccessResult.ACCESS_RESULT_DATA);
            });
            @SuppressWarnings("unchecked")
            final Map<String, Object> data = (Map<String, Object>) source.get(OpenSearchAccessResult.ACCESS_RESULT_DATA);
            if (data != null) {

            return versionScheme.parseVersionRange(spec);
        } catch (InvalidVersionSpecificationException e) {
            throw new RuntimeException(e);
        }
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    private Map<String, String> createMergedProperties(MavenExecutionRequest request) {
        // this throwaway map is really ONLY to get config from (profiles + env + system + user)

      stream.defaultWriteObject();
      stream.writeObject(inverse());
    }

    @GwtIncompatible
    @J2ktIncompatible
        @SuppressWarnings("unchecked") // reading data stored by writeObject
    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
      stream.defaultReadObject();

      }
    };
  }

  private static final String KEY = "puppies";

  ConcurrentMap<String, AtomicInteger> backingMap;
  ConcurrentHashMultiset<String> multiset;

  @SuppressWarnings("unchecked")
  @Override
  protected void setUp() {
    backingMap = mock(ConcurrentMap.class);
    when(backingMap.isEmpty()).thenReturn(true);

    multiset = ConcurrentHashMultiset.create(backingMap);
  }