docs: def retrieve_response(self, correlation_id):
  		"""
  		Retrieve a registered RPC response. If the correlation_id was not registered, an KeyError will the raised. If not value has been
  		received yet, None will be returned. After retrieving the response, the value will be unset internally.
  
  		The returned value will include the entire RabbitMQ message, consisting of a dict with the following keys:
  
  			method_frame: dict
  				Information about the message
  			header_frame: dict
  				Headers of the message
  			body: string
  				Body of the message
  
  		Parameters
  		----------
  		correlation_id: string
  			Identifier to retrieve the RPC response for
  		"""
  		if correlation_id not in self.responses:
  			raise KeyError("Given RPC response correlation_id was not registered.")
  		if not self.responses[correlation_id]:
  			return None
  
  		response = self.responses[correlation_id]
  		del(self.responses[correlation_id])
  		return response