public void restoreOriginal() throws SQLException {
        throw new UnsupportedOperationException();
    }
Restores this <code>CachedRowSetImpl</code> object to its original state,
that is, its state before the last set of changes.
<P>
Before returning, this method moves the cursor before the first row
and sends a <code>rowSetChanged</code> event to all registered
listeners.
@throws SQLException if an error is occurs rolling back the RowSet
          state to the definied original value.
@see RowSetListener#rowSetChanged
src/main/java/org/replicadb/rowset/sun/rowset/internal/SyncResolverImpl.java