String pk = getPrimaryKeyColumn(row);
String ctable = canonicalize(table);
    public static int delete(Context context, TableRow row) throws SQLException    {        String pk = getPrimaryKeyColumn(row);        if (row.isColumnNull(pk))        {            throw new IllegalArgumentException("Primary key value is null");        }        return delete(context, row.getTable(), row.getIntColumn(pk));    }