docs: public static String getConcreteBeanClassName(EnterpriseBean enterpriseBean)
      {
          String beanClassName = enterpriseBean.getEjbClassName();
          String packageName = packageName(beanClassName);
          String beanName = encodeBeanInterfacesName(enterpriseBean, true, false, false, false); // d147734
  
          StringBuffer result = new StringBuffer();
          if (packageName != null)
          {
              result.append(packageName);
              result.append('.');
          }
  
          result.append(concreteBeanPrefix);
          result.append(beanName);
  
          return result.toString();
      }