tag: Long,
  ): BasicDerAdapter<T> = copy(tagClass = tagClass, tag = tag)

  /** Returns a copy of this adapter that doesn't encode values equal to [defaultValue]. */
  fun optional(defaultValue: T? = null): BasicDerAdapter<T> = copy(isOptional = true, defaultValue = defaultValue)

  /**
   * Returns a copy of this adapter that sets the encoded or decoded value as the type hint for the
   * other adapters on this SEQUENCE to interrogate.

        if (StringUtil.isBlank(filetype)) {
            return defaultValue;
        }
        return filetype;
    }

    public String getDefaultValue() {
        return defaultValue;
    }

    public void setDefaultValue(final String defaultValue) {
        this.defaultValue = defaultValue;
    }

    public String[] getTypes() {

func (f *DeclField) TypeName() string {
	return f.Type.TypeName()
}

// DefaultValue returns the zero value associated with the field.
func (f *DeclField) DefaultValue() ref.Val {
	if f.defaultValue != nil {
		return types.DefaultTypeAdapter.NativeToValue(f.defaultValue)
	}
	return f.Type.DefaultValue()
}

// EnumValues returns the set of values that this field may take.
func (f *DeclField) EnumValues() []ref.Val {

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

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

  @Override

   * @return function that returns {@code map.get(a)} when {@code a} is a key, or {@code
   *     defaultValue} otherwise
   */
  public static <K extends @Nullable Object, V extends @Nullable Object> Function<K, V> forMap(
      Map<K, ? extends V> map, @ParametricNullness V defaultValue) {
    return new ForMapWithDefault<>(map, defaultValue);
  }

}

func GetBoolConditionFromSpec(cfg config.Config, condition string, defaultValue bool) bool {
	c, ok := cfg.Status.(*v1alpha1.IstioStatus)
	if !ok {
		return defaultValue
	}
	return GetBoolCondition(c.Conditions, condition, defaultValue)
}

func GetBoolCondition(conditions []*v1alpha1.IstioCondition, condition string, defaultValue bool) bool {
	got := GetCondition(conditions, condition)
	if got == nil {

  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

    }

    public static Object defaultValueOf(ModelType<?> primitiveModelType) {
        Object defaultValue = TYPES_DEFAULT_VALUES.get(primitiveModelType);
        if (defaultValue == null) {
            throw new IllegalArgumentException(primitiveModelType + " is not a primitive type.");
        }
        return defaultValue;
    }

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

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

  @Override

    public String getAsString(final String key, final String defaultValue) {
        final Object obj = get(key);

        final String value;
        if (obj == null) {
            value = defaultValue;
        } else {
            value = obj.toString();
        }

        return value;
    }

    public int getAsInt(final String key, final int defaultValue) {
        final Object obj = get(key);