code: public ELBinder bindELAnnotation(Class<? extends Annotation> annotationClass, ExecutionPolicy policy) {
          ELInterceptor interceptor = new ELInterceptor(annotationClass, policy);
          binder.requestInjection(interceptor);
          binder.bindInterceptor(Matchers.any(), handlerMethodMatcher(annotationClass), interceptor);
          return this;
      }
docs: Bind an ELInterceptor to the given annotation with the given
  {@link ELBinder.ExecutionPolicy}.
  
  @param annotationClass EL annotation to intercept
  @param policy          determine when the EL is evaluated
  @return ELBinder