f.walk(&n.X, context, visit)
	case *ast.UnaryExpr:
		f.walk(&n.X, ctxExpr, visit)
	case *ast.BinaryExpr:
		f.walk(&n.X, ctxExpr, visit)
		f.walk(&n.Y, ctxExpr, visit)
	case *ast.KeyValueExpr:
		f.walk(&n.Key, ctxExpr, visit)
		f.walk(&n.Value, ctxExpr, visit)

	case *ast.ArrayType:
		f.walk(&n.Len, ctxExpr, visit)
		f.walk(&n.Elt, ctxType, visit)
	case *ast.StructType:
		f.walk(n.Fields, ctxField, visit)

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public BadWordCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsBadWordCB cb = this;

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public ElevateWordCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsElevateWordCB cb = this;

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public JobLogCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsJobLogCB cb = this;

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public PathMappingCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsPathMappingCB cb = this;

        return doGetConditionQuery();
    }

    // ===================================================================================
    //                                                                         Primary Key
    //                                                                         ===========
    public ThumbnailQueueCB acceptPK(String id) {
        assertObjectNotNull("id", id);
        BsThumbnailQueueCB cb = this;

				return "", errNoSuchUser
			}
		}
		return res.NormDN, nil
	default:
		return "", errIAMActionNotAllowed
	}
}

// guessUserProvider - guesses the user provider based on the access key and claims.
func guessUserProvider(credentials auth.Credentials) string {
	if !credentials.IsServiceAccount() && !credentials.IsTemp() {
		return madmin.BuiltinProvider // regular users are always internal
	}

     *
     * @param <REQ> The request type
     * @param <REP> The response type
     * @param req The request object used as the cache key
     * @param supplier The function to execute and cache the result
     * @return The result from the supplier (either fresh or cached)

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o additionalUserMap: (NotRequired - Default map:{})
    #  You can set additional users.
    #  Elements of this map are as below:
    #   o key of map: User Definition Name (userDefName)
    #   o url: (NotRequired - Default same as one of main schema)
    #   o schema: (NotRequired - Default treated as no schema setting)
    #   o user: (Required)

        MAX_SIZE,
        new Receiver<ReferenceEntry<Integer, Integer>>() {
          @Override
          public void accept(ReferenceEntry<Integer, Integer> entry) {
            Integer key = entry.getKey();
            cache.invalidate(key);
          }
        });
  }

  public void testEviction_lru() {
    // test lru within a single segment
    IdentityLoader<Integer> loader = identityLoader();