}

  private static void insertIntoReplica(Map<Integer, AtomicInteger> replica, int newValue) {
    if (replica.containsKey(newValue)) {
      replica.get(newValue).incrementAndGet();
    } else {
      replica.put(newValue, new AtomicInteger(1));
    }
  }

  private static void removeMinFromReplica(
      SortedMap<Integer, AtomicInteger> replica, int minValue) {

        // Test overwriting existing keys
        paramMap = new HashMap<>();
        paramMap.put("key1", "oldValue");
        configParam = "key1=newValue";
        ParameterUtil.loadConfigParams(paramMap, configParam);
        assertEquals(1, paramMap.size());
        assertEquals("newValue", paramMap.get("key1"));
    }

    public void test_createConfigParameterMap() {
        String configParameters;

    private @Nullable T value;

    @Nullable T get() {
      return value;
    }

    void checkAndSet(@Nullable T expected, @Nullable T newValue) {
      if (value != expected) {
        throw new ConcurrentModificationException();
      }
      value = newValue;
    }

    void clear() {
      value = null;
    }
  }

  private static final class AvlNode<E extends @Nullable Object> {

 * </ul>
 *
 * <p>Usage:
 * <pre>
 * DynamicProperties dynamicProperties = new DynamicProperties("path/to/properties/file");
 * String value = dynamicProperties.getProperty("key");
 * dynamicProperties.setProperty("key", "newValue");
 * dynamicProperties.store();
 * </pre>
 *
 * <p>Exceptions:
 * <ul>
 *   <li>{@link FileAccessException} - Thrown if there are issues accessing the file.</li>

   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final boolean replace(K key, V oldValue, V newValue) {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.
   *
   * @throws UnsupportedOperationException always