Creates a string representation of xid, in the format <gtrid>,<bqual>,<formatID> the
<gtrid> and <bqual> strings contain alphanumeric characters, and non alphanumeric characters
are converted to "ab" where ab is the hexadecimal representation of the character.
Creates a string representation of xid, in the format <gtrid>,<bqual>,<formatID> the <gtrid> and <bqual> strings contain alphanumeric characters, and non alphanumeric characters are converted to "ab" where ab is the hexadecimal representation of the character.