*/
@Test
public void spi() throws Exception {
DataModelSourceProvider provider = new SpiDataModelSourceProvider(ExcelSheetSourceProvider.class.getClassLoader());
URI uri = uri("data/workbook.xls", ":1");
DataModelSource source = provider.open(SIMPLE, uri, new TestContext.Empty());
assertThat(source, not(nullValue()));
Simple s1 = next(source);
assertThat(s1.number, is(200));
assertThat(s1.text, is("bbb"));