How does SDK implement state feature? There are APIs that allow filtering through the HTTP request itself (filter through replication keys) and some APIs that return all data, How should one access a state object inside functions like

prepare_request_payload()

for a tap in order get the bookmark values so they can add it in a payload for the API POST Request. I am able to successfully send the requests but i want the value of replication keys in the state file be used in the request as part of state feature .