static Base64Variants()
{
System.Text.StringBuilder sb = new System.Text.StringBuilder(STD_BASE64_ALPHABET);
// Replace plus with hyphen, slash with underscore (and no padding)
Sharpen.Runtime.setCharAt(sb, sb.indexOf("+"), '-');
Sharpen.Runtime.setCharAt(sb, sb.indexOf("/"), '_');
/* And finally, let's not split lines either, wouldn't work too
* well with URLs
*/
MODIFIED_FOR_URL = new com.fasterxml.jackson.core.Base64Variant("MODIFIED-FOR-URL"
, sb.ToString(), false, com.fasterxml.jackson.core.Base64Variant.PADDING_CHAR_NONE
, int.MaxValue);
}