available property
Available separates "this org has no traffic" from "we could not ask". False means the warehouse was unreachable or the org has emitted nothing at all, and every count below is then a placeholder zero rather than a measurement — a caller must read this before reading any of them.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
bool? available;