code: def stack_call(self, *args):
          
          self.pipelined_args.append(args)
          self.number_of_stacked_calls = self.number_of_stacked_calls + 1
docs: Stacks a redis command inside the object.
  
          The syntax is the same than the call() method a Client class.
  
          Args:
              *args: full redis command as variable length argument list.
  
          Examples:
              >>> pipeline = Pipeline()
              >>> pipeline.stack_call("HSET", "key", "field", "value")
              >>> pipeline.stack_call("PING")
              >>> pipeline.stack_call("INCR", "key2")