* Maven installation configuration directory.
     *
     * @since 4.0.0
     */
    @Config(defaultValue = "${maven.home}/conf")
    public static final String MAVEN_INSTALLATION_CONF = "maven.installation.conf";

    /**
     * Maven user configuration directory.
     *
     * @since 4.0.0
     */
    @Config(defaultValue = "${user.home}/.m2")
    public static final String MAVEN_USER_CONF = "maven.user.conf";

    /**

    return edgeValueOrDefaultInternal(checkNotNull(nodeU), checkNotNull(nodeV), defaultValue);
  }

  @Override
  public @Nullable V edgeValueOrDefault(EndpointPair<N> endpoints, @Nullable V defaultValue) {
    validateEndpoints(endpoints);
    return edgeValueOrDefaultInternal(endpoints.nodeU(), endpoints.nodeV(), defaultValue);
  }

  @Override

     * @param func The function to apply to the virtual host key
     * @param defaultValue The default value to return if no virtual host matches
     * @return The result of applying the function, or the default value
     */
    protected <T> T processVirtualHost(final Function<String, T> func, final T defaultValue) {
        final Tuple3<String, String, String>[] vHosts = ComponentUtil.getFessConfig().getVirtualHosts();

        assertNull(dataStoreParams.getAsString("nonExistentKey"));
        assertEquals("defaultValue", dataStoreParams.getAsString("nonExistentKey", "defaultValue"));

        dataStoreParams.put("nullKey", null);
        assertEquals("defaultValue", dataStoreParams.getAsString("nullKey", "defaultValue"));
    }

        return getAs(key, defaultValue, s -> s);
    }

    /**
     * Retrieves a setting value as an int.
     * @param key The key of the setting.
     * @param defaultValue The default value if the setting is not found.
     * @return The setting value as an int.
     */
    public int getAsInt(final String key, final int defaultValue) {

     *
     * @param defaultValue the new default file type value
     */
    public void setDefaultValue(final String defaultValue) {
        this.defaultValue = defaultValue;
    }

    /**
     * Gets all distinct file types currently configured in the mappings.
     *
     * @return an array of all unique file type values
     */
    public String[] getTypes() {

  fun getEnablePush(defaultValue: Boolean): Boolean {
    val bit = 1 shl ENABLE_PUSH
    return if (bit and set != 0) values[ENABLE_PUSH] == 1 else defaultValue
  }

  fun getMaxConcurrentStreams(): Int {
    val bit = 1 shl MAX_CONCURRENT_STREAMS
    return if (bit and set != 0) values[MAX_CONCURRENT_STREAMS] else Int.MAX_VALUE
  }

  fun getMaxFrameSize(defaultValue: Int): Int {
    val bit = 1 shl MAX_FRAME_SIZE

        </field>
        <field xml.attribute="true">
          <name>executionPoint</name>
          <required>false</required>
          <version>2.0.0+</version>
          <type>String</type>
          <defaultValue><![CDATA[]]></defaultValue>
          <description><![CDATA[If specified, identifies this phase as a dynamic phase to decorate the specified phase id, e.g. {@code after} or {@code before}.]]></description>
        </field>

) {
  /**
   * Returns the charset of this media type, or [defaultValue] if either this media type doesn't
   * specify a charset, or if its charset is unsupported by the current runtime.
   */
  @JvmOverloads
  fun charset(defaultValue: Charset? = null): Charset? {
    val charset = parameter("charset") ?: return defaultValue
    return try {
      Charset.forName(charset)
    } catch (_: IllegalArgumentException) {

     *
     * @param key the parameter key to look up
     * @param defaultValue the default value to return if key is not found or value is null
     * @return the parameter value as a String, or defaultValue if not found
     */
    public String getAsString(final String key, final String defaultValue) {
        final String value = getAsString(key);
        if (value != null) {
            return value;