method_missing(sym, *args, &block)
  public
  
    
    
Send the missing method to time instance, and
wrap result in a new TimeWithZone
with the existing time_zone.
   
  
    Show source    
    
      
    def method_missing(sym, *args, &block)
      result = time.__send__(sym, *args, &block)
      result.acts_like?(:time) ? self.class.new(nil, time_zone, result) : result
    end