### Question:
AnchorTabularBuilderSequential extends AbstractTabularBuilder<AnchorTabularBuilderSequential> { public AnchorTabularBuilderSequential addIgnoredColumn() { return addIgnoredColumn("ignored" + UUID.randomUUID()); } AnchorTabularBuilderSequential(); AnchorTabularBuilderSequential addColumn(GenericColumn column); AnchorTabularBuilderSequential addIgnoredColumn(); AnchorTabularBuilderSequential addIgnoredColumn(String name); AnchorTabularBuilderSequential addIgnoredColumn(GenericColumn column); AnchorTabularBuilderSequential addTargetColumn(GenericColumn column);  }### Answer:
@Test public void testAllIgnoredFails() { Assertions.assertThrows(IllegalArgumentException.class, () -> new AnchorTabularBuilderSequential() .addIgnoredColumn() .addIgnoredColumn() .addIgnoredColumn() .addIgnoredColumn() .build(getTestCSV())); }