private int findMetadataColumnIndex() {
int index = 0;
List<DynamicColumn<DTColumnConfig>> columns = widget.getColumns();
for ( int iCol = 0; iCol < columns.size(); iCol++ ) {
DynamicColumn<DTColumnConfig> column = columns.get( iCol );
DTColumnConfig modelColumn = column.getModelColumn();
if ( modelColumn instanceof RowNumberCol ) {
index = iCol;
} else if ( modelColumn instanceof DescriptionCol ) {
index = iCol;
} else if ( modelColumn instanceof MetadataCol ) {