code: func (b *Base64) UnmarshalEasyJSON(in *jlexer.Lexer) {
  	if data := in.String(); in.Ok() {
  		enc := base64.StdEncoding
  		dbuf := make([]byte, enc.DecodedLen(len(data)))
  
  		n, err := enc.Decode(dbuf, []byte(data))
  		if err != nil {
  			in.AddError(err)
  			return
  		}
  
  		*b = dbuf[:n]
  	}
  }
docs: // UnmarshalEasyJSON sets the Base64 from a easyjson.Lexer