code: @XmlElementDecl(namespace = "http://www.w3.org/1998/Math/MathML", name = "exists")
      public JAXBElement<LogicType> createExists(LogicType value) {
          return new JAXBElement<LogicType>(_Exists_QNAME, LogicType.class, null, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link LogicType }{@code >}}