### Question:
RemoveSubstringTransformer implements Transformer { @Override public OutputColumns getOutputColumns() { return new OutputColumns(String.class, baseColumn.getName() + " (substring removed)"); }  @Override OutputColumns getOutputColumns(); @Override String[] transform(final InputRow inputRow);  }### Answer:
@Test public void testGetOutputColumns() { Assert.assertEquals(1, _transformer.getOutputColumns().getColumnCount()); Assert.assertEquals(String.class, _transformer.getOutputColumns().getColumnType(0)); Assert.assertEquals("baseCol (substring removed)", _transformer.getOutputColumns().getColumnName(0)); }