code: function(id, key) {
        if(memStore[id] && typeof key === 'string' && memStore[id][key]) {
          return memStore[id][key];
        } else {
          return undefined;
        }
      }
docs: Recall value of data stored by 'key'.
  
  @function
  @param {String} id
  @param {String} key
  @returns {(String|Number|Boolean|Array|Object|undefined)}