docs: function assertAbove (n, msg) {
      if (msg) flag(this, 'message', msg);
      var obj = flag(this, 'object');
      if (flag(this, 'doLength')) {
        new Assertion(obj, msg).to.have.property('length');
        var len = obj.length;
        this.assert(
            len > n
          , 'expected #{this} to have a length above #{exp} but got #{act}'
          , 'expected #{this} to not have a length above #{exp}'
          , n
          , len
        );
      } else {
        this.assert(
            obj > n
          , 'expected #{this} to be above ' + n
          , 'expected #{this} to be at most ' + n
        );
      }
    }