code: func parsePartitionKey(pkStr string) []string {
  	pkStr = strings.TrimSpace(pkStr)
  	var pks []string
  	partitionKeys := strings.Split(pkStr, ",")
  	for _, pk := range partitionKeys {
  		npk := strings.TrimSpace(pk)
  		if len(pk) > 0 {
  			pks = append(pks, npk)
  		}
  	}
  	return pks
  }
docs: // parsePartitionKey func parses the partition key of DOSA object