protected boolean internalNext() throws SQLException {
        throw new UnsupportedOperationException();
    }
Moves this <code>CachedRowSetImpl</code> object's cursor to the next
row and returns <code>true</code> if the cursor is still in the rowset;
returns <code>false</code> if the cursor has moved to the position after
the last row.
<P>
This method handles the cases where the cursor moves to a row that
has been deleted.
If this rowset shows deleted rows and the cursor moves to a row
that has been deleted, this method moves the cursor to the next
row until the cursor is on a row that has not been deleted.
<P>
The method <code>internalNext</code> is called by methods such as
<code>next</code>, <code>absolute</code>, and <code>relative</code>,
and, as its name implies, is only called internally.
<p>
This is a implementation only method and is not required as a standard
implementation of the <code>CachedRowSet</code> interface.

@return <code>true</code> if the cursor is on a valid row in this
        rowset; <code>false</code> if it is after the last row
@throws SQLException if an error occurs
src/main/java/org/replicadb/rowset/sun/rowset/internal/SyncResolverImpl.java