*
     * @param pairs the list of AV pairs to modify
     * @param rep the replacement AV pair
     */
    public static void replace(final List<AvPair> pairs, final AvPair rep) {
        remove(pairs, rep.getType());
        pairs.add(rep);
    }

    /**
     * Encodes a list of AV pairs into byte array format
     *
     * @param pairs the list of AV pairs to encode
     * @return encoded avpairs

    assertThat(headers["e"]).isNull()
  }

  @Test fun iteratorOperator() {
    val headers = headersOf("a", "b", "c", "d")

    val pairs = mutableListOf<Pair<String, String>>()
    for ((name, value) in headers) {
      pairs += name to value
    }

    assertThat(pairs).containsExactly("a" to "b", "c" to "d")
  }

  @Test fun builderGetOperator() {
    val builder = Headers.Builder()
    builder.add("a", "b")

        final Map<String, List<String>> paramListMap = new HashMap<>();
        final String[] pairs = queryString.split("&");
        try {
            for (final String pair : pairs) {
                final int pos = pair.indexOf('=');
                if (pos >= 0) {
                    final String key = urlCodec.decode(pair.substring(0, pos), enc);
                    List<String> list = paramListMap.get(key);

    Escapers.Builder builder = Escapers.builder();
    // The char values \uFFFE and \uFFFF are explicitly not allowed in XML
    // (Unicode code points above \uFFFF are represented via surrogate pairs
    // which means they are treated as pairs of safe characters).
    builder.setSafeRange(Character.MIN_VALUE, '\uFFFD');
    // Unsafe characters are replaced with the Unicode replacement character.
    builder.setUnsafeReplacement("\uFFFD");

@GwtIncompatible
public final class ExecutionList {
  /** Logger to log exceptions caught when running runnables. */
  private static final LazyLogger log = new LazyLogger(ExecutionList.class);

  /**
   * The runnable, executor pairs to execute. This acts as a stack threaded through the {@link
   * RunnableExecutorPair#next} field.
   */
  @GuardedBy("this")
  private @Nullable RunnableExecutorPair runnables;

  @GuardedBy("this")

    private final byte[] raw;

    /**
     * Constructs an AV pair with type and raw data
     * @param type the AV pair type
     * @param raw the raw data bytes
     */
    public AvPair(final int type, final byte[] raw) {
        this.type = type;
        this.raw = raw;
    }

    /**
     * Gets the AV pair type
     * @return the type
     */
    public final int getType() {

@GwtIncompatible
public final class ExecutionList {
  /** Logger to log exceptions caught when running runnables. */
  private static final LazyLogger log = new LazyLogger(ExecutionList.class);

  /**
   * The runnable, executor pairs to execute. This acts as a stack threaded through the {@link
   * RunnableExecutorPair#next} field.
   */
  @GuardedBy("this")
  private @Nullable RunnableExecutorPair runnables;

  @GuardedBy("this")

     * Interpolates the values in the given map using the provided callback function.
     * This method defaults to setting empty strings for unresolved placeholders.
     *
     * @param properties The map containing key-value pairs to be interpolated.
     * @param callback The function to resolve variable values not found in the map.
     */
    default void interpolate(@Nonnull Map<String, String> properties, @Nullable UnaryOperator<String> callback) {

A `200 OK` Response should have `application/json` content-type and body with the following structure:

```json
{
    "user": <string>,
    "maxValiditySeconds": <integer>,
    "claims": <key-value-pairs>
}
```

| Parameter Name     | Value Type                              | Purpose                                                |

     * @return map containing the key-value pair
     */
    protected static Map<String, String> createPropItem(final String key) {
        return createItem(key, System.getProperty(key));
    }

    /**
     * Creates a key-value item map for display.
     *
     * @param label the item label
     * @param value the item value
     * @return map containing the formatted key-value pair
     */