public void undoDelete() throws SQLException {
        throw new UnsupportedOperationException();
    }
Cancels deletion of the current row and notifies listeners that
a row has changed.
<P>
Note:  This method can be ignored if deleted rows are not being shown,
which is the normal case.

@throws SQLException if the cursor is not on a valid row
src/main/java/org/replicadb/rowset/sun/rowset/internal/SyncResolverImpl.java