code: function UMLStructuralFeature() {
          UMLFeature.apply(this, arguments);
  
          /** @member {string} */
          this.type = '';
  
          /** @member {string} */
          this.multiplicity = '';
  
          /** @member {boolean} */
          this.isReadOnly = false;
  
          /** @member {boolean} */
          this.isOrdered = false;
  
          /** @member {boolean} */
          this.isUnique = false;
  
          /** @member {string} */
          this.defaultValue = '';
      }
docs: UMLStructuralFeature
  @constructor
  @extends UMLFeature