NewEventTracker is a constructor function that creates a new instance of the EventTracker struct.

NewTrackerBlockContainer is a constructor function that creates a new instance of the TrackerBlockContainer struct.

EventTracker represents a tracker for events on desired contracts on some chain.

EventTrackerConfig is a struct that holds configuration of a EventTracker.

TrackerBlockContainer is a struct used to cache and manage tracked blocks from tracked chain.

BlockProvider is an interface that defines methods for retrieving blocks and logs from a blockchain.

EventSubscriber is an interface that defines methods for handling tracked logs (events) from a blockchain.