How can I mark a parameter as null in the request body?

[cia1]

Content & configuration

Openapi v3, "multipart/form-data" in requestBody.

Is your feature request related to a problem?

In Swagger UI I can set empty value to a property in RequestBody ("multipart/form-data"), but I cannot ignore the property and not send this to server.

Describe the solution you'd like

I want have an opertunity to mark (checkbox) a property in RequestBody to send or ignore (if this property is not required).

[hkosova]

Closing as a duplicate of #5303.
(This issue is older, but #5303 has more details.)