code: func (t *Template) ExecuteString(m map[string]interface{}) string {
  	return t.ExecuteFuncString(func(w io.Writer, tag string) (int, error) { return stdTagFunc(w, tag, m) })
  }
docs: // ExecuteString substitutes template tags (placeholders) with the corresponding
  // values from the map m and returns the result.
  //
  // Substitution map m may contain values with the following types:
  //   * []byte - the fastest value type
  //   * string - convenient value type
  //   * TagFunc - flexible value type
  //
  // This function is optimized for frozen templates.
  // Use ExecuteString for constantly changing templates.