private final Context context;
    private final Function<Diagnostic<? extends JavaFileObject>, String> messageFormatter;

    private int errorCount = 0;
    private int warningCount = 0;

    DiagnosticToProblemListener(InternalProblemReporter problemReporter, Context context, Function<Diagnostic<? extends JavaFileObject>, String> messageFormatter) {
        this.problemReporter = problemReporter;

                        import javax.lang.model.element.TypeElement;
                        import javax.lang.model.SourceVersion;
                        import javax.tools.JavaFileObject;

                        @SupportedAnnotationTypes("com.test.SimpleAnnotation")
                        public class SimpleAnnotationProcessor extends AbstractProcessor {
                            @Override