subaddress method
Get a subaddress based on minor and major indexes, or return the primary address if both are 0.
Implementation
String subaddress(int minorIndex, {int majorIndex = 0}) {
if (minorIndex == 0 && majorIndex == 0) {
return primaryAddress;
}
return scubaddr.computeAndEncodeKeys(
minorIndex, majorIndex, coinConf.subaddrNetVer);
}