Type of a WaitCondition.
"time" | "full" | "empty" | "not_empty" | "item_count" | "circuit" | "inactivity" | "robots_inactive" | "fluid_count" | "passenger_present" | "passenger_not_present" | "fuel_item_count_all" | "fuel_item_count_any" | "fuel_full" | "destination_full_or_no_path" | "request_satisfied" | "request_not_satisfied" | "all_requests_satisfied" | "any_request_not_satisfied" | "any_request_zero" | "any_planet_import_zero" | "specific_destination_full" | "specific_destination_not_full" | "at_station" | "not_at_station" | "damage_taken"