DataKey represents a key in a namespace.

KeyValue encapsulates a key and corresponding value.

ProposedWrites encapsulates the final writes that a transaction intends to commit This is intended to be used to evaluate the endorsement policies by the Processor for the endorser transactions.

PvtdataKeyHash represents the hash of a key in a collection within a namespace.

ReadHint encapsulates the details of the hint about what keys a `Processor` may read during processing of a transaction.

ReadHintDetails captures the details about what data associated with a key a transaction may read (whether the value, or metadata, or both).

WriteHint is intended to be used to give a transaction processor a hint what keys a transaction may write in its pre-simulated section (if any).