function newBooleanInStorage(uniqueKey) {

    //log('newBooleanInStorage: enter');
    //log('newBooleanInStorage: uniqueKey=' + uniqueKey);

    var utils = {};

    utils.storageKey = uniqueKey;

    utils.hasValue = function hasValue() {
        // returns true if any value has been stored for this object

        const key = this.storageKey;

        const stored = localStorage.getItem(key);

        const flag = (stored !== null);

        return flag;
    };

    utils.set = function set(boolValue) {
        //log('newBooleanInStorage.utils.set: enter');
        //log('newBooleanInStorage.utils.set: storageKey=' + utils.storageKey);
        //log('newBooleanInStorage.utils.set: boolValue=' + boolValue);

        var stringValue = "false";

        if (boolValue)
            stringValue = "true";

        localStorage.setItem(utils.storageKey, stringValue);

        //log('newBooleanInStorage.utils.set: leave');
    };

    utils.get = function get() {
        //log('newBooleanInStorage.utils.get: enter');
        //log('newBooleanInStorage.utils.get: storageKey=' + utils.storageKey);

        var value = false;

        var valueStr = localStorage.getItem(utils.storageKey);

        if (valueStr === 'true')
            value = true;

        //log('newBooleanInStorage.utils.get: value=' + value);
        //log('newBooleanInStorage.utils.get: leave');

        return value;
    };

    utils.clear = function clear() {

        log('newBooleanInStorage.utils.clear: enter');
        log('newBooleanInStorage.utils.clear: storageKey=' + utils.storageKey);

        localStorage.removeItem(this.storageKey);

        log('newBooleanInStorage.utils.clear: leave');
    }

    //log('newBooleanInStorage: leave');

    return utils;
}