code: function listCacheGet(key) {
    var data = this.__data__,
        index = _assocIndexOf(data, key);
  
    return index < 0 ? undefined : data[index][1];
  }
docs: Gets the list cache value for `key`.
  
  @private
  @name get
  @memberOf ListCache
  @param {string} key The key of the value to get.
  @returns {*} Returns the entry value.