function checkTokenIsNotUsed(req) {
  console.log('TEST ' + req.params.token);
  objectDB.findObject('artefact', {"data.token": req.params.token})
  .then(function(result) {
    console.log('findObject result' + result);
    if (isDefined(result)) {
      console.log('Artefact Exists');
      serverError(res, 'Cannot delete token as it is associated with an artefact');
    } else {
      console.log('Token not being used by an artefact, okay for deletion');
    };
  })
  .catch(function(err){
    console.error('Token CHECK DELETE error: '+err.message);
    serverError(res, 'err.message');
  });
};
//
// Token deletion
//
app.delete('/:token', function(req, res, next) {
  checkTokenIsNotUsed(req)
  .then(function(results){
    return tokenModel.findOne({token: req.params.token});
  })