public boolean first() throws SQLException {
        throw new UnsupportedOperationException();
    }
Moves this <code>CachedRowSetImpl</code> object's cursor to the first row
and returns <code>true</code> if the operation was successful.  This
method also notifies registered listeners that the cursor has moved.

@return <code>true</code> if the cursor is on a valid row;
        <code>false</code> otherwise or if there are no rows in this
        <code>CachedRowSetImpl</code> object
@throws SQLException if the type of this rowset
           is <code>ResultSet.TYPE_FORWARD_ONLY</code>
src/main/java/org/replicadb/rowset/sun/rowset/internal/SyncResolverImpl.java