code: func (m *Manager) GetByGrant(grant Grant, globalID string) ([]SavedGrants, error) {
  	var usersWithGrant []SavedGrants
  
  	if err := m.collection.Find(bson.M{"grants": grant, "globalid": globalID}).All(&usersWithGrant); err != nil {
  		return nil, err
  	}
  
  	return usersWithGrant, nil
  }
docs: // GetByGrant returns all SavedGrants where the given grant is in the list of grants