return toBigInteger(o, null);
    }

    /**
     * Converts to {@link BigInteger}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link BigInteger}
     */
    public static BigInteger toBigInteger(final Object o, final String pattern) {
        if (o == null) {
            return null;

ame":"dillon","roleArn":"arn:minio:iam:::role/nOybJqMNzNmroqEKq5D0","sa-policy":"inherited-policy","sub":"Cit1aWQ9ZGlsbG9uLG91"},"sessionPolicy":null,"status":"on","name":"","description":"","expiration":"1970-01-01T00:00:00Z"},"dillon-svcacct-1":{"parent":"oCnAoSQFtdVQtKwrB73j","accessKey":"dillon-svcacct-1","secretKey":"dillon-svcacct-1","groups":null,"claims":{"accessKey":"dillon-svcacct-1","parent":"oCnAoSQFtdVQtKwrB73j","sa-policy":"embedded-policy","sessionPolicy":"eyJWZXJzaW9uIjoiIiwi==",...

                    Class<?> clazz = MockMultiThreadedHttpConnectionManager.class;
                    Method method = clazz.getMethod("shutdownAll", (Class<?>[]) null);
                    method.invoke(null, (Object[]) null);
                } catch (Exception e) {
                    // Exception should be caught and logged
                    exceptionHandled.set(true);
                }
            }

    Converter<String, Number> converter = Converter.<String, Number>from(forward, backward);

    assertNull(converter.convert(null));
    assertNull(converter.reverse().convert(null));

    assertEquals((Integer) 5, converter.convert("5"));
    assertEquals("5", converter.reverse().convert(5));
  }

  // Null-passthrough violates our nullness annotations, so we don't support it under J2KT.
  @J2ktIncompatible

    int initialSize = collection.size();
    assertTrue("remove(null) should return true", collection.remove(null));
    assertEquals(
        "remove(present) should decrease a collection's size by one.",
        initialSize - 1,
        collection.size());
    expectMissing((E) null);
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)

            getMap()
                .computeIfAbsent(
                    null,
                    k -> {
                      assertNull(k);
                      return v3();
                    }));
    expectUnchanged();
    expectNullKeyMissingWhenNullKeysUnsupported(
        "Should not contain null key after unsupported computeIfAbsent(null, function)");
  }

    }

    public void myspecifyPropertyCancel(String propertyName) {
        if (__specifiedProperties != null) {
            __specifiedProperties.remove(propertyName);
        }
    }

    public void clearSpecifiedInfo() {
        if (__specifiedProperties != null) {
            __specifiedProperties.clear();
        }
    }

    protected void checkSpecifiedProperty(String propertyName) {

  public void testOffer_nullSupported() {
    assertTrue("offer(null) should return true", getQueue().offer(null));
    expectAdded((E) null);
  }

  @CollectionFeature.Require(value = SUPPORTS_ADD, absent = ALLOWS_NULL_VALUES)
  public void testOffer_nullUnsupported() {
    assertThrows(NullPointerException.class, () -> getQueue().offer(null));
    expectUnchanged();

        .onRequestStart(CloseSocket())
        .build(),
    )
    val webSocket = newWebSocket()
    clientListener.assertFailure(
      101,
      null,
      ProtocolException::class.java,
      "Expected 'Connection' header value 'Upgrade' but was 'null'",
    )
    webSocket.cancel()
  }

  @Test
  @Throws(IOException::class)
  fun wrongConnectionHeader() {
    webServer.enqueue(

        assertEquals(0, result);
    }

    @Test
    @DisplayName("Test all read methods with null buffer")
    void testReadMethodsWithNullBuffer() {
        // Even with null buffer, methods should return 0 without throwing exception
        int result = response.readSetupWireFormat(null, 0, 0);
        assertEquals(0, result);

        result = response.readParametersWireFormat(null, 0, 0);