[yang-doctors] Definition for base64

[Mahesh Jethanandani <[e-mail]>]

Is there a definition for base64 defined in one of the YANG models? I would prefer to use one if it defined. If not, I was going to define one as

 typedef base64 {
    type string {
      pattern '(([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|'
            + '[A-Za-z0-9+/]{2}==)?){1}';
    }
    description
      "A binary-to-text encoding scheme to represent binary data in
       an ASCII string format.";
    reference
      "RFC 4648, The Base16, Base32, and Base64 Data Encodings";
  }

Mahesh Jethanandani
[e-mail]