Default - continuous blocks, txs, and events are always permitted.

Allows consumption of blocks where the next block has a different predecessor block to that which was last consumed.

Allows consumption of events with non-monotonic index (within transaction) or a different number of events to that which is expected.

Allows consumption of transactions with non-monotonic index (within block) or a different number of transactions to that which is expected.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Execution event types.

Could structure this further if needed - sum type of various results relevant to different transaction types.

This message exists purely for framing []StreamEvent.

TxStack is able to consume potentially nested txs.