LogicalTypeValidatingVisitor implements Visitor<Void> { @Override public Void getResult() { return null; }  @Override void onVisit(Schema schema, Collection<String> breadcrumb); @Override void onVisit(Field field, Collection<String> breadcrumb); @Override Void getResult();  }
@Test public void result() { assertThat(underTest.getResult(), is(nullValue())); }