Added some comments

shared/channels/src/channels/amqp_helpers.py

@@ -92,10 +92,17 @@ class Channel(Protocol[T]):
             self.definition.declarations(self.CHANNEL)
 
     def close(self):
+        """
+        Close connection to RabbitMQ server, if it's open
+        """
         if self.CONNECTION:
             self.CONNECTION.close()
 
     def send(self, event: WorkflowEventSchema):
+        """
+        Send a given WorkflowEvent to the exchange
+        :param event: The marshmallow schema of the event to be sent
+        """
         rendered = self.definition.schema.dump(event)
         routing_key = self.definition.routing_key_for(event)
         self.CHANNEL.basic_publish(routing_key=routing_key, body=rendered)