presto-thrift/src/main/java/io/prestosql/plugin/thrift/location/ExtendedSimpleAddressSelector.java/ExtendedSimpleAddressSelector/selectAddress
class ExtendedSimpleAddressSelector:    @Override
    public Optional<SimpleAddress> selectAddress(Optional<String> context)
    {
        return selectAddress(context, ImmutableSet.of());
    }