connectedAt property
ConnectedAt is when somebody was last known to have this sandbox's project OPEN, Unix seconds. It is a fact with an EXPIRY rather than a flag: a watcher restamps it every beat of its stream, and it goes stale on its own when the stream dies, so nothing has to be turned off by a process that may not be there any more. The reaper reads it to choose WHICH idle allowance applies — see lifecycle.go. Zero means nobody has said so, which puts the sandbox on the short clock.
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
int? connectedAt;