*/
public static Collection<TestRowData> getAll() {
List<TestRowData> all = Lists.newArrayList();
//simple
all.add(new TestRowDataEmpty());
all.add(new TestRowDataTrivial());
all.add(new TestRowDataSimple());
all.add(new TestRowDataDeeper());
//more specific
all.add(new TestRowDataSingleQualifier());