*.*.cancellable#parameter nullable default=null

SystemBusName
  .new symbol_type="constructor"
UnixGroup
  .new symbol_type="constructor"
  .new_for_name symbol_type="constructor"
UnixNetgroup
  .new symbol_type="constructor"
UnixProcess
  .new symbol_type="constructor"
  .new_for_owner symbol_type="constructor"
  .new_full symbol_type="constructor"
UnixSession
  .new symbol_type="constructor"
  .new_for_process symbol_type="constructor"
  .new_for_process_sync symbol_type="constructor"
UnixUser
  .new symbol_type="constructor"
  .new_for_name symbol_type="constructor"