code: function(key) {
          var me = this,
              value;
  
          if (me.containsKey(key)) {
              value = me.map[key];
              delete me.map[key];
              --me.length;
              if (me.hasListeners.remove) {
                  me.fireEvent('remove', me, key, value);
              }
              return true;
          }
          return false;
      }
docs: Remove an item from the hash.
  @param {String} key The key to remove.
  @return {Boolean} True if the item was successfully removed.