code: public String getInputGroupSecurityName(String inputVirtualRealm) {
          // initialize the return value
          String returnValue = getInputMapping(inputVirtualRealm, Service.CONFIG_DO_GROUP_SECURITY_NAME_MAPPING,
                                               INPUT_GROUP_SECURITY_NAME_DEFAULT);
          return returnValue;
      }
docs: Get the input group security name mapping for the UserRegistry.
  
  @param inputVirtualRealm Virtual realm to find the mappings.
  
  @return The input group security name property.
  
  @pre inputVirtualRealm != null
  @pre inputVirtualRealm != ""
  @post $return != ""
  @post $return != null