Class InMemorySerializedStates

Close the database and free resources.

Notify the backend about newly finalized blocks, in ancestor-first order.

Backends that share data between states (e.g. a content-addressed values DB) use this to move the blocks' references from speculative to finalized. MUST be called before markUnused of the same finality round, otherwise the newly finalized blocks would be treated as dead forks and values still referenced by the finalized state could be dropped.

Retrieve posterior state of given header.

Compute a state root for given state.

Insert a pre-defined initial state directly into the database.

Mark state as no longer needed. Backend may remove it asynchronously.

Apply & commit a state update.

NOTE: for efficiency, the implementation MAY alter given state object.