Swagger generating type zoneddatetime in the swagger json

[ddm12345]

I have a route which looks like this:
xxx.xxxController.xxxMethod(from: ZonedDateTime, to: ZonedDateTime ?= ZonedDateTime.now())

For this I am generating swagger api documentation.
But in the generated file I can see:
[{"in":"query","name":"from","type":"zoneddatetime","required":true},{"default":"ZonedDateTime.now()","in":"query","name":"to","type":"zoneddatetime","required":false}]

also in the swagger-ui when I am trying it out it is not accepting anything. I believe this is because of the type:zoneddatetime as that is not a valid type.

I tried overriding it as per the instruction by creating a swagger-custom-mapping.yml and adding like this:
`---

• type: java.time.ZonedDateTime
  specAsParameter:
  • type: string`

But the generated file is the same. Let me know if I am missing anything.