code: public CaseMarshallerFactory withJpa(String puName) {
          marshallers.add(new JPAPlaceholderResolverStrategy(puName, classLoader));
          this.toString.append(".withJpa(\"" + puName + "\")");
          return this;
      }
docs: Add JPA marshalling strategy to be used by CaseFileMarshaller
  @param puName persistence unit name to be used
  @return this factory instance