public boolean isLast() throws SQLException {
        throw new UnsupportedOperationException();
    }
Indicates whether the cursor is on the last row in this
<code>CachedRowSetImpl</code> object.
<P>
Note: Calling the method <code>isLast</code> may be expensive
because the JDBC driver might need to fetch ahead one row in order
to determine whether the current row is the last row in this rowset.

@return <code>true</code> if the cursor is on the last row;
        <code>false</code> otherwise or if this rowset contains no rows
@throws SQLException if an error occurs
src/main/java/org/replicadb/rowset/sun/rowset/internal/SyncResolverImpl.java