initMapWithNullKey();
    assertTrue("containsKey(null) should return true", getMap().containsKey(null));
  }

  @MapFeature.Require(ALLOWS_NULL_VALUES)
  @CollectionSize.Require(absent = ZERO)
  public void testContains_keyWithNullValueContained() {
    initMapWithNullValue();
    assertTrue(
        "containsKey(keyForNullValue) should return true",
        getMap().containsKey(getKeyForNullValue()));
  }

        } else if (requestType.equals(MetadataResolutionRequestTypeEnum.versionedGraph)) {
            return new MetadataGraph(getTree(), true, false);
        } else if (requestType.equals(MetadataResolutionRequestTypeEnum.scopedGraph)) {
            return new MetadataGraph(getTree(), true, true);
        }
        return null;
    }
    // ----------------------------------------------------------------------------

    }

    /**
     * Checks if a previous page exists.
     * @return true if a previous page exists, false otherwise.
     */
    public boolean isExistPrePage() {
        return existPrePage;
    }

    /**
     * Sets whether a previous page exists.
     * @param existPrePage true if a previous page exists, false otherwise.
     */

      } else if (from == Bound.EXCLUSIVE && to == Bound.INCLUSIVE) {
        return set.subSet(firstExclusive, false, lastInclusive, true);
      } else if (from == Bound.INCLUSIVE && to == Bound.INCLUSIVE) {
        return set.subSet(firstInclusive, true, lastInclusive, true);
      } else {
        return (NavigableSet<E>) super.createSubSet(set, firstExclusive, lastExclusive);
      }
    }
  }

  @Override

   * of the queue is evicted to make room.
   *
   * @return {@code true} always
   */
  @Override
  @CanIgnoreReturnValue
  public boolean offer(E e) {
    return add(e);
  }

  /**
   * Adds the given element to this queue. If the queue is currently full, the element at the head
   * of the queue is evicted to make room.
   *
   * @return {@code true} always
   */
  @Override
  @CanIgnoreReturnValue

func isNumeric(k reflect.Kind) bool {
	switch k {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return true
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		return true
	case reflect.Float32, reflect.Float64:
		return true
	default:
		return false
	}
}

          val source = Buffer().writeUtf8("hello")
          return object : ForwardingSource(source) {
            @Throws(IOException::class)
            override fun close() {
              closed.set(true)
              super.close()
            }
          }.buffer()
        }
      }
    assertThat(body.string()).isEqualTo("hello")
    assertThat(closed.get()).isTrue()
  }

  @Test

        /**
         * Check if lease has read caching
         *
         * @return true if read caching is enabled
         */
        public boolean hasReadCache() {
            return Smb2LeaseState.hasReadCaching(leaseState);
        }

        /**
         * Check if lease has write caching
         *
         * @return true if write caching is enabled
         */
        public boolean hasWriteCache() {

        TestSmbComNTCreateAndXResponse testBlock = new TestSmbComNTCreateAndXResponse(mockConfig, true, 2) {
            @Override
            protected int readHeaderWireFormat(byte[] buffer, int bufferIndex) {
                return 33;
            }
        };
        testBlock.configureForTest(true, 2);
        testBlock.setCommand((byte) ServerMessageBlock.SMB_COM_NT_CREATE_ANDX);

  /**
   * Notify this pool that [connection] has become idle. Returns true if the connection has been
   * removed from the pool and should be closed.
   */
  fun connectionBecameIdle(connection: RealConnection): Boolean {
    connection.assertLockHeld()

    return if (connection.noNewExchanges || maxIdleConnections == 0) {
      connection.noNewExchanges = true
      connections.remove(connection)