this.buffer = (T[]) new Object[Math.multiplyExact(k, 2)];
    this.bufferSize = 0;
    this.threshold = null;
  }

  /**
   * Adds {@code elem} as a candidate for the top {@code k} elements. This operation takes amortized
   * O(1) time.
   */
  public void offer(@ParametricNullness T elem) {
    if (k == 0) {
      return;

								<group>root</group>
							</mapper>
						</data>
						<!-- Adds systemd file -->
						<data>
							<type>file</type>
							<src>${project.build.directory}/generated-packaging/deb/systemd/fess.service</src>
							<dst>${packaging.fess.systemd.dir}/fess.service</dst>
						</data>
						<!-- Adds systemd/sysctl.d configuration file -->
						<data>
							<type>file</type>

     */
    protected String getDefaultHelpLink(final String url) {
        return url.replaceFirst("/\\{lang\\}/", "/").replaceFirst("\\{version\\}", majorVersion + "." + minorVersion);
    }

    /**
     * Adds a design JSP file name to the map.
     *
     * @param key   The key for the JSP file.
     * @param value The file name.
     */
    public void addDesignJspFileName(final String key, final String value) {

          // may generate something like <capture#1-of ? extends Foo&SubFoo>.
          // Checking subtype between declared and actual type bounds
          // adds recursive isSubtypeOf() call and feels complicated.
          // There is no contract one way or another as long as isSubtypeOf() works as expected.
          combined.addAll(asList(typeParam.getBounds()));

    protected boolean usePipeline = false;

    /**
     * Adds an index configuration file path to be loaded.
     *
     * @param path path to the index configuration file
     */
    public void addIndexConfig(final String path) {
        indexConfigList.add(path);
    }

    /**
     * Adds a configuration file for a specific index.
     *
     * @param index the index name

          // may generate something like <capture#1-of ? extends Foo&SubFoo>.
          // Checking subtype between declared and actual type bounds
          // adds recursive isSubtypeOf() call and feels complicated.
          // There is no contract one way or another as long as isSubtypeOf() works as expected.
          combined.addAll(asList(typeParam.getBounds()));