* @throws IllegalArgumentException if name or queryCommand is null
     */
    public void add(final String name, final QueryCommand queryCommand) {
        if (name == null || queryCommand == null) {
            throw new IllegalArgumentException("name or queryCommand is null.");
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Loaded {}", name);
        }

     *
     * @param path
     *            The path to the properties file. If {@code null}, a {@link FileAccessException} is thrown.
     * @throws FileAccessException
     *             If the file cannot be accessed or created.
     */
    public DynamicProperties(final String path) {
        this(path == null ? null : new File(path));
    }

    /**

            systemHelperField.setAccessible(true);
            systemHelperField.set(null, null);

            java.lang.reflect.Field indexingHelperField = ComponentUtil.class.getDeclaredField("indexingHelper");
            indexingHelperField.setAccessible(true);
            indexingHelperField.set(null, null);

  }

  public void testNull() {
    assertThrows(NullPointerException.class, () -> map.put(null, new Integer(1)));
    map.putInstance(Integer.class, null);
    assertNull(map.get(Integer.class));
    assertNull(map.getInstance(Integer.class));

    map.put(Long.class, null);
    assertNull(map.get(Long.class));
    assertNull(map.getInstance(Long.class));
  }

    if (sslSocket is BCSSLSocket) {
      when (val protocol = (sslSocket as BCSSLSocket).applicationProtocol) {
        // Handles both un-configured and none selected.
        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {
    val isSupported: Boolean =
      try {

        add(severity, version, message, null, null);
    }

    default void add(
            BuilderProblem.Severity severity, ModelProblem.Version version, String message, InputLocation location) {
        add(severity, version, message, location, null);
    }

    default void add(

        if (millis != null) {
            delayMillisAfterProcessing = millis;
        }

        millis = params.get("delayMillisAtNoUrlInQueue");
        if (millis != null) {
            delayMillisAtNoUrlInQueue = millis;
        }

        millis = params.get("delayMillisBeforeProcessing");
        if (millis != null) {
            delayMillisBeforeProcessing = millis;
        }

        });
    }

    @Override
    public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();
    }

    // Test constructor with null query string
    public void test_constructor_nullQueryString() {
        queryContext = new QueryContext(null, false);
        assertEquals("*", queryContext.getQueryString());
        assertNull(queryContext.getDefaultField());
    }

            assertArrayEquals(ciphers, context.getCiphers());
        }

        @Test
        @DisplayName("Should create instance with null ciphers")
        void testConstructorWithNullCiphers() {
            EncryptionNegotiateContext context = new EncryptionNegotiateContext(mockConfig, null);

            assertNotNull(context);
            assertNull(context.getCiphers());
        }

        @Test

    this.singleValue = singleValue;
    this.inverse = null;
  }

  private SingletonImmutableBiMap(K singleKey, V singleValue, ImmutableBiMap<V, K> inverse) {
    this.singleKey = singleKey;
    this.singleValue = singleValue;
    this.inverse = inverse;
  }

  @Override
  public @Nullable V get(@Nullable Object key) {
    return singleKey.equals(key) ? singleValue : null;
  }

  @Override
  public int size() {