code: @XmlElementDecl(namespace = "urn:oasis:names:tc:xacml:2.0:policy:schema:os", name = "AttributeValue", substitutionHeadNamespace = "urn:oasis:names:tc:xacml:2.0:policy:schema:os", substitutionHeadName = "Expression")
      public JAXBElement<AttributeValueType> createAttributeValue(AttributeValueType value) {
          return new JAXBElement<AttributeValueType>(_AttributeValue_QNAME, AttributeValueType.class, null, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link AttributeValueType }{@code >}}