code: func copyRow(row map[string]dosa.FieldValue) map[string]dosa.FieldValue {
  	copied := make(map[string]dosa.FieldValue, len(row))
  	for k, v := range row {
  		copied[k] = v
  	}
  	return copied
  }
docs: // copyRow takes in a given "row" and returns a new map containing all of the same
  // values that were in the given row.