return delegate;
                  }

                  @Override
                  public boolean removeAll(Collection<?> c) {
                    return Iterators.removeAll(iterator(), c);
                  }

                  @Override
                  public boolean retainAll(Collection<?> c) {
                    return Iterators.retainAll(iterator(), c);
                  }

  @Override
  protected SortedMap<K, V> makeEitherMap() {
    try {
      return makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return makeEmptyMap();
    }
  }

  public void testTailMapWriteThrough() {
    SortedMap<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    if (map.size() < 2 || !supportsPut) {
      return;
    }

  @Override
  protected SortedMap<K, V> makeEitherMap() {
    try {
      return makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return makeEmptyMap();
    }
  }

  public void testTailMapWriteThrough() {
    SortedMap<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    if (map.size() < 2 || !supportsPut) {
      return;
    }

     */
    public synchronized void disconnect(boolean hard) throws IOException {
        IOException ioe = null;

        switch (state) {
        case 0: /* not connected - just return */
            return;
        case 2:
            hard = true;
        case 3: /* connected - go ahead and disconnect */
            if (response_map.size() != 0 && !hard) {
                break; /* outstanding requests */

            afterSessionStart(session);
        } catch (MavenExecutionException e) {
            return addExceptionToResult(result, e);
        }

        try {
            chainedWorkspaceReader.addReader(lookup.lookup(WorkspaceReader.class, ReactorReader.HINT));
        } catch (LookupException e) {
            return addExceptionToResult(result, e);
        }

    assertTrue("contains(present) should return true", collection.contains(e0()));
  }

  public void testContains_no() {
    assertFalse("contains(notPresent) should return false", collection.contains(e3()));
  }

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

	if err != nil {
		return cfg, err
	}

	cfg.RequestsMax = requestsMax
	if requestsMax < 0 {
		return cfg, errors.New("invalid API max requests value")
	}

	clusterDeadline, err := time.ParseDuration(env.Get(EnvAPIClusterDeadline, kvs.GetWithDefault(apiClusterDeadline, DefaultKVS)))
	if err != nil {
		return cfg, err
	}
	cfg.ClusterDeadline = clusterDeadline

    if (future.isDone()) {
      return;
    }
    long timeoutSeconds = timeoutSeconds();
    long deadline = System.nanoTime() + SECONDS.toNanos(timeoutSeconds);
    do {
      System.runFinalization();
      if (future.isDone()) {
        return;
      }
      System.gc();
      try {
        future.get(1L, SECONDS);
        return;

@app.get("/optional-str")
async def read_optional_str(p: Annotated[str | None, Header()] = None):
    return {"p": p}


class HeaderModelOptionalStr(BaseModel):
    p: str | None = None


@app.get("/model-optional-str")
async def read_model_optional_str(p: Annotated[HeaderModelOptionalStr, Header()]):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",
    ["/optional-str", "/model-optional-str"],
)

            return setupWireFormatReturn;
        }

        @Override
        protected int writeParametersWireFormat(byte[] dst, int dstIndex) {
            return parametersWireFormatReturn;
        }

        @Override
        protected int writeDataWireFormat(byte[] dst, int dstIndex) {
            return dataWireFormatReturn;
        }

        @Override