code: func coalesce(ch *chart.Chart, dest map[string]interface{}) (map[string]interface{}, error) {
  	var err error
  	dest, err = coalesceValues(ch, dest)
  	if err != nil {
  		return dest, err
  	}
  	coalesceDeps(ch, dest)
  	return dest, nil
  }
docs: // coalesce coalesces the dest values and the chart values, giving priority to the dest values.
  //
  // This is a helper function for CoalesceValues.