* @param moduleName
   * @param environment
   * @return PlIterator
   */
  public static PlIterator sGetRules(String relationName, String moduleName, Environment environment) {
    { Context module = PLI.safelyGetModule(moduleName, environment);
      Stella_Object relation = PLI.safelyGetRelation(relationName, ((Module)(module)), environment);

      return (PLI.getRules(((LogicObject)(relation)), ((Module)(module)), environment));
    }
  }