}

    /**
     * Returns a new array with the specified object appended to the end.
     *
     * @param <T>
     *            the type of the array elements
     * @param array
     *            the array. Must not be {@literal null}
     * @param obj
     *            the object to add
     * @return a new array with the object appended
     */
    public static <T> T[] add(final T[] array, final T obj) {

        // Then
        assertEquals(appendedReferral, initialReferral.next,
                "The 'next' property of the initial referral should point to the appended referral.");
        assertEquals(initialReferral, appendedReferral.next,
                "The 'next' property of the appended referral should point back to the initial referral, closing the loop.");
    }

    /**
     * Tests the toString method of the DfsReferral class.

    }

    /**
     * Append content to the message buffer.
     *
     * @param value the content to append
     * @param start the starting index of the subsequence to be appended
     * @param end the end index of the subsequence to be appended
     * @return the current builder
     */
    @Nonnull
    default MessageBuilder a(CharSequence value, int start, int end) {
        return append(value, start, end);
    }

         * - ISO control characters and space characters are treated as spaces.
         * - Alphanumeric characters (0-9, A-Z, a-z) are appended to the buffer.
         * - Symbol characters (!-/, :-@, [-`, {-~) are appended to the buffer.
         * - Duplicate terms can be removed based on the `duplicateTermRemoved` flag.

    }

    /**
     * Gets the additional query string that is appended to all search queries.
     *
     * @return the additionalQuery
     */
    public String getAdditionalQuery() {
        return additionalQuery;
    }

    /**
     * Sets the additional query string that is appended to all search queries.
     *
     * @param additionalQuery the additionalQuery to set
     */

     * If the property is not already set, it will be initialized with this package.
     * If the property is set but does not contain this package, the package will be appended.
     */
    default void initialize() {
        final StringBuilder buf = new StringBuilder(100);
        final String value = System.getProperty("java.protocol.handler.pkgs");
        if (StringUtil.isEmpty(value)) {

 * limitations under the License.
 */
package okhttp3.internal.ws

import okio.Buffer
import okio.ByteString.Companion.encodeUtf8

object WebSocketProtocol {
  /** Magic value which must be appended to the key in a response header. */
  internal const val ACCEPT_MAGIC = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"

  /*
  Each frame starts with two bytes of data.

   0 1 2 3 4 5 6 7    0 1 2 3 4 5 6 7

    /**
     * Appends a filter to an existing filter chain.
     *
     * @param filter the filter to append
     * @param chain the existing filter chain to append to
     * @return a new filter chain that includes the appended filter
     */
    protected FilterChain appendFilterChain(final Filter filter, final FilterChain chain) {
        return (context, query, boost) -> filter.execute(context, query, boost, chain);
    }

    /**

     * per line (similar to {@code maven.conf}) and {@code '#'} (hash) marked comment lines are allowed. Goals, if
     * present, are appended, to those specified on CLI input, if any.
     */
    Optional<String> atFile();

    /**
     * Returns the list of goals and phases to execute.
     *

    /**
     * Appends a filter to the existing filter chain.
     *
     * @param filter the filter to append
     * @param chain the existing filter chain
     * @return a new filter chain with the filter appended
     */
    protected FilterChain appendFilterChain(final Filter filter, final FilterChain chain) {
        return query -> filter.parse(query, chain);
    }

    /**