Getting Swagger to use LocalDate object instead of String

Hello!
I have an application configured with Jersey 2.29, Java 8 and Swagger 1.5.22
When I open Swagger page with the interface for the rest service, this is what I see (dates in String format):

{  "alPeriod": {
    "startDate": "2019-08-08",
    "endDate": "2019-08-08"}
}

When in fact I am expecting this (a LocalDate with year, month and day):

{  "alPeriod":{
    "startDate":{"year":2018,"month":1,"day":1},
    "endDate":{"year":2018,"month":1,"day":20}}
} 

I read issue #2377 and others similar to it, I tried to set @ApiModelProperty, .... but nothing works. Actually I am amazed to see that some people are trying to do the contrary! They have already dates as LocalDate working perfectly and they are trying to put it as String, as I have now.

The configuration of the application is done via BeanConfig, like this:

public class SampleApplication extends Application {

    public SampleApplication() {
        BeanConfig beanConfig = new BeanConfig();
        beanConfig.setResourcePackage("com.x.y.z");
        beanConfig.setVersion("1.0.2");
        beanConfig.setSchemes(new String[]{"http"});
        beanConfig.setHost("localhost:8080");
        beanConfig.setBasePath("/api");
        beanConfig.setScan(true);
		beanConfig.setPrettyPrint(true);
    }

    @Override
    public Set<Class<?>> getClasses() {
        ...
    }
}

What am I missing to get Java 8 LocalDate object format?
Thanks!

Start with the BeanConfig setup and the attempted @ApiModelProperty changes described in the issue, then compare the generated Swagger page with the Java 8 LocalDate model. Check issue #2377 for related behavior; the work is complete when the generated schema represents the dates in the requested object form.