}

    protected abstract String doBuildColumnString(String dm);

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override
    public String buildDisplayString(String name, boolean column, boolean relation) { // #pending
        return toString();
    }

    // ===================================================================================

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<CrawlingInfoParam> selectPage(CBCall<CrawlingInfoParamCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<CrawlingInfoParam>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<CrawlingInfoParamCB> cbLambda, EntityRowHandler<CrawlingInfoParam> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<UserInfo> selectPage(CBCall<UserInfoCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<UserInfo>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<UserInfoCB> cbLambda, EntityRowHandler<UserInfo> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RelatedContent> selectPage(CBCall<RelatedContentCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RelatedContent>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RelatedContentCB> cbLambda, EntityRowHandler<RelatedContent> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RelatedQuery> selectPage(CBCall<RelatedQueryCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RelatedQuery>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RelatedQueryCB> cbLambda, EntityRowHandler<RelatedQuery> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RoleType> selectPage(CBCall<RoleTypeCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RoleType>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RoleTypeCB> cbLambda, EntityRowHandler<RoleType> entityLambda) {

    public ListResultBean<User> selectList(CBCall<UserCB> cbLambda) {
        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<User> selectPage(CBCall<UserCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<User>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<UserCB> cbLambda, EntityRowHandler<User> entityLambda) {

    AbstractFuture<Object> testFuture3 = new AbstractFuture<Object>() {};
    testFuture3.setFuture(testFuture2);
    assertThat(testFuture3.toString())
        .matches(
            "[^\\[]+\\[status=PENDING, setFuture=\\[[^\\[]+\\[status=PENDING,"
                + " info=\\[cause=\\[Someday...]]]]]");
    testFuture2.set("result string");
    assertThat(testFuture3.toString())

   *
   * <p>Among the improvements that this method and {@code LoadingCache.get(K)} both provide are:
   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one
   *   <li>eliminating the error-prone caching boilerplate
   *   <li>tracking load {@linkplain #stats statistics}
   * </ul>
   *

/**
 * An entry in a reference map.
 *
 * <p>Entries in the map can be in the following states:
 *
 * <p>Valid:
 *
 * <ul>
 *   <li>Live: valid key/value are set
 *   <li>Loading: loading is pending
 * </ul>
 *
 * <p>Invalid:
 *
 * <ul>
 *   <li>Expired: time expired (key/value may still be set)
 *   <li>Collected: key/value was partially collected, but not yet cleaned up