Collector.of(
          ToOptionalState::new,
          ToOptionalState::add,
          ToOptionalState::combine,
          ToOptionalState::getOptional,
          Collector.Characteristics.UNORDERED);

  /**
   * A collector that converts a stream of zero or one elements to an {@code Optional}.
   *
   * @throws IllegalArgumentException if the stream consists of two or more elements.

                                    <la:errors/>
                                </div>
                                    <%-- Form Fields --%>
                                <table class="table table-bordered" aria-label="<la:message key="labels.user_details" />">
                                    <tbody>
                                    <tr>

                                <div class="row">
                                    <div class="col-sm-12">
                                        <table class="table table-bordered table-striped" aria-label="<la:message key="labels.dict_mapping_list" />">
                                            <thead>
                                            <tr>

 *
 * <p><b>Key-grouped iteration.</b> All view collections follow the same iteration order. In all
 * current implementations, the iteration order always keeps multiple entries with the same key
 * together. Any creation method that would customarily respect insertion order (such as {@link
 * #copyOf(Multimap)}) instead preserves key-grouped order by inserting entries for an existing key
 * immediately after the last entry having that key.
 *

            0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnOrder = cci("order", "order", null, null, Integer.class, "order", null, false, false, false,
            "Integer", 0, 0, null, null, false, null, null, null, null, null, false);

 * a chain of filters and executing registered query commands.
 *
 * <p>The processor maintains a map of query commands indexed by query class names
 * and a list of filters that are applied in order during query processing.</p>
 */
public class QueryProcessor {

    /**
     * Default constructor.
     */
    public QueryProcessor() {
        // Default constructor
    }

                                    <la:errors/>
                                </div>
                                    <%-- Form Fields --%>
                                <table class="table table-bordered" aria-label="<la:message key="labels.web_auth_details" />">
                                    <tbody>
                                    <tr>
                                        <th style="width: 25%"><la:message

   * Returns a {@code Collector} that accumulates the input elements into a new {@code
   * ImmutableSet}. Elements appear in the resulting set in the encounter order of the stream; if
   * the stream contains duplicates (according to {@link Object#equals(Object)}), only the first
   * duplicate in encounter order will appear in the result.
   *
   * @since 21.0
   */
  public static <E> Collector<E, ?, ImmutableSet<E>> toImmutableSet() {

============

If you would like to contribute code to OkHttp you can do so through GitHub by
forking the repository and sending a pull request.

When submitting code, please make every effort to follow existing conventions
and style in order to keep the code as readable as possible. Please also make
sure your code compiles by running `./gradlew check`. Checkstyle failures
during compilation indicate errors in your style and can be viewed in the

            int bytesEncoded = buffer.encode(dst, 0);

            assertEquals(buffer.size(), bytesEncoded);

            // Verify encoded data
            ByteBuffer bb = ByteBuffer.wrap(dst).order(ByteOrder.LITTLE_ENDIAN);
            assertEquals(maxReferralLevel, bb.getShort());

            // Verify path encoding (UTF-16LE)
            byte[] pathBytes = path.getBytes(StandardCharsets.UTF_16LE);