JavaPoet get Annotation of method's parameter

How can I get the annotation from the parameter of my function with javaPoet?

String dummyFunction(@DummyAnnotation String variable);

I used the following code but it returns always null , while debugging I can see all the other attributes of my parameter "e" but not the annotation.

MethodSpec m = MethodSpec.methodBuilder(k.getSimpleName().toString())
                                .addModifiers(Modifier.PUBLIC)
                                .addAnnotation(AnnotationSpec.builder(Override.class).build())
                                .addParameters(ee.getParameters()
                                        .stream().peek(e -> {
                                            System.out.println(((VariableElement) e).getAnnotation(DummyAnnotation.class))
                                         }

thanks for your help