mergeOid function
Creates a new OID based two OIDs.
To shorten the result OID, we retrieve the substring of
oid1
andoid2
and concatenate them together. Of course, there might be conflict but the chance is so low that we can ignore (like OID generator),
Implementation
String mergeOid(String oid1, String oid2)
=> "${oid1.substring(0, 12)}${oid2.substring(0, 12)}";