code: function() {
          var ctx = u.context(TINY);
          logger.debugf('Invoke clear(msgId=%d)', ctx.id);
          return futureEmpty(ctx, 0x13);
        }
docs: Clear all entries stored in server(s).
  
  @returns {module:promise.Promise}
  A promise that will be completed when the clear has been completed.
  @memberof Client#
  @since 0.3