}

    /**
     * Returns the object, or the defaultValue if the object is <code>null</code>.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * ObjectUtil.defaultValue(null, "NULL")  = "NULL"
     * ObjectUtil.defaultValue(null, 1)    = 1
     * ObjectUtil.defaultValue(Boolean.TRUE, true) = Boolean.TRUE
     * ObjectUtil.defaultValue(null, null) = null
     * </pre>
     *

     * 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";

    /**

      implements Function<K, V>, Serializable {
    final Map<K, ? extends V> map;
    @ParametricNullness final V defaultValue;

    ForMapWithDefault(Map<K, ? extends V> map, @ParametricNullness V defaultValue) {
      this.map = checkNotNull(map);
      this.defaultValue = defaultValue;
    }

    @Override
    @ParametricNullness
    public V apply(@ParametricNullness K key) {

     *
     * @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() {

	}

	// default value is function or null or blank (primary keys)
	field.DefaultValue = strings.TrimSpace(field.DefaultValue)
	skipParseDefaultValue := strings.Contains(field.DefaultValue, "(") &&
		strings.Contains(field.DefaultValue, ")") || strings.ToLower(field.DefaultValue) == "null" || field.DefaultValue == ""
	switch reflect.Indirect(fieldValue).Kind() {
	case reflect.Bool:
		field.DataType = Bool

   * Returns the first element in {@code iterable} that satisfies the given predicate, or {@code
   * defaultValue} if none found. Note that this can usually be handled more naturally using {@code
   * tryFind(iterable, predicate).or(defaultValue)}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code
   * stream.filter(predicate).findFirst().orElse(defaultValue)}
   *
   * @since 7.0
   */
  // The signature we really want here is...
  //

            return defaultValue != null ? defaultValue.toString() : StringUtil.EMPTY;
        } catch (final Exception e) {
            return StringUtil.EMPTY;
        }
    }

    private String getDefaultMaxKey() {
        try {
            final Method method = CustomSize.class.getMethod("maxKey");
            final Object defaultValue = method.getDefaultValue();

          <version>4.0.0+</version>
          <defaultValue>mail</defaultValue>
          <type>String</type>
          <description>The mechanism used to deliver notifications.</description>
        </field>
        <field>
          <name>sendOnError</name>
          <version>4.0.0+</version>
          <defaultValue>true</defaultValue>
          <type>boolean</type>

     *
     * @param key the property key
     * @param defaultValue the default value
     * @return the property value, or the default value if not found
     */
    public static String getProperty(String key, String defaultValue) {
        return System.getProperty(key, defaultValue);
    }

    /**
     * Returns the system environment variable value for the specified key.
     *

   * position}th position or {@code defaultValue} otherwise.
   *
   * @param position position of the element to return
   * @param defaultValue the default value to return if the iterator is empty or if {@code position}
   *     is greater than the number of elements remaining in {@code iterator}
   * @return the element at the specified position in {@code iterator} or {@code defaultValue} if