code: def send(self, *args, **kwargs):
          
          if not self.transport:
              raise ValueError(
                  "This RecipeWrapper object does not contain "
                  "a reference to a transport object."
              )
  
          if not self.recipe_step:
              raise ValueError(
                  "This RecipeWrapper object does not contain "
                  "a recipe with a selected step."
              )
  
          if "output" not in self.recipe_step:
              # The current recipe step does not have output channels.
              return
  
          if isinstance(self.recipe_step["output"], dict):
              # The current recipe step does have named output channels.
              if self.default_channel:
                  # Use named output channel
                  self.send_to(self.default_channel, *args, **kwargs)
  
          else:
              # The current recipe step does have unnamed output channels.
              self._send_to_destinations(self.recipe_step["output"], *args, **kwargs)
docs: Send messages to another service that is connected to the currently
          running service via the recipe. The 'send' method will either use a
          default channel name, set via the set_default_channel method, or an
          unnamed output definition.