facetFactory.processParams(new ProcessParameterContext(method, 0, facetedMethodParameter));
final Facet facet = facetedMethodParameter.getFacet(TypicalLengthFacet.class);
assertNotNull(facet);
assertTrue(facet instanceof TypicalLengthFacetOnParameterAnnotation);
final TypicalLengthFacetOnParameterAnnotation typicalLengthFacetAnnotation = (TypicalLengthFacetOnParameterAnnotation) facet;
assertEquals(20, typicalLengthFacetAnnotation.value());
}