var nextKey = { };
var result;

while ( nextKey != null ) {
  result = db.adminCommand( { cleanupOrphaned: "CE.C_C", startingFromKey: nextKey, "secondaryThrottle": true } );

  if (result.ok != 1)
     print("Unable to complete at this time: failure or timeout.")

  printjson(result);

  nextKey = result.stoppedAtKey;
}