docs: function check(args, names) {
                  var msg         = '',
                      name        = '',
                      template    = '{{ name }} coud not be empty!',
                      
                      indexOf     = Array.prototype.indexOf,
                      
                      lenNames    = names.length,
                      lenArgs     = args.length,
                      lessArgs    = lenArgs < lenNames,
                      emptyIndex  = indexOf.call(args),
                      isEmpty     = ~emptyIndex;
                  
                  if (lessArgs || isEmpty) {
                      if (lessArgs)
                          name        = names[lenNames - 1];
                      else
                          name        = names[emptyIndex];
                      
                      msg         = Util.render(template, {
                          name: name
                      });
                      
                      throw(Error(msg));
                  }
                  
                  return check;
              }