code: public static String getConfiguredTemplateMapping() {
  
          String param = null;
          for (CmsModule module : OpenCms.getModuleManager().getAllInstalledModules()) {
              param = module.getParameter("template-mapping");
              if (param != null) {
                  break;
              }
          }
          return param;
      }
docs: Tries to read the path to the template mapping file from module parameters.<p>
  
  @return the template mapping file path