AbstractDataServiceVisitor implements ElementVisitor<String, Writer> ,ProcessorConstants { @Override public String visitExecutable(ExecutableElement e, Writer p) { return null; } AbstractDataServiceVisitor(ProcessingEnvironment environment); @Override String visitType(TypeElement typeElement, Writer writer); @Override String visit(Element e, Writer p); @Override String visit(Element e); @Override String visitPackage(PackageElement e, Writer p); @Override String visitVariable(VariableElement e, Writer p); @Override String visitExecutable(ExecutableElement e, Writer p); @Override String visitTypeParameter(TypeParameterElement e, Writer p); @Override String visitUnknown(Element e, Writer p);  }
@Test public void testVisitExecutable() { System.out.println("visitExecutable"); String result = instance.visitExecutable(null, null); assertThat(result).isNull(); }