person: a human project member with a resolved profile; member is set.
robot: a robot-token member with a token label; member is set.
automation: a robot-token member without a label, or an unlisted p-
robot or system ID, even when error is set.
unknown: the directory answered and does not name the id, such as a
departed member or a member whose profile did not resolve.
unavailable: the directory read failed (error is set) and does not
hold the id, except robot and system IDs, so whether it names a member is
not known.
pending: the directory has not answered yet and does not hold the id.
How one stored actor id reads:
person: a human project member with a resolved profile;memberis set.robot: a robot-token member with a token label;memberis set.automation: a robot-token member without a label, or an unlistedp-robot or system ID, even whenerroris set.unknown: the directory answered and does not name the id, such as a departed member or a member whose profile did not resolve.unavailable: the directory read failed (erroris set) and does not hold the id, except robot and system IDs, so whether it names a member is not known.pending: the directory has not answered yet and does not hold the id.