code: func (s *Store) GetCollection(name string) *Collection {
  	if s.collLock != nil {
  		s.collLock.RLock()
  		defer s.collLock.RUnlock()
  	}
  	return s.colls[name]
  }
docs: // GetCollection returns the Collection with the specified name. If no such
  // Collection exists, GetCollection will return nil.