fn successor_measurement(
messages: &[Message],
predecessor_reads: &[String],
) -> Option<HandoffSuccessor>Expand description
The counts, or None when the transcript read answered nothing.
A failed read is not a successor that re-read nothing. The read is a whole transcript; a successor with turns to count cannot have an empty one, so an empty answer is a failure and writing zeros for it would read as the best possible brief.