Support for different Content-Type / Headers for each method

[owitplat]

Hello,

Thanks very much for providing this excellent module.

Our use case is to consume an API that requires a different Content-Type for each of GET , DELETE, POST and PATCH.

Specifically, we need
Content-Type = application/json for GET
Content-Type = application/vnd.api+json for POST and PATCH
No Content-Type for DELETE

We've not been able to come up with a way to set the Content-Type based on method.

We currently set Content-Type with
headers = {
"Authorization" = "ApiKey ${var.apikey}"
"Content-Type" = "${var.content_type}",
}

which is then used for all actions.

We can't create a plan unless we use -refresh=false to skip the GET call since the API is expecting application/json.
Using a JSON API type returns
Error: unexpected response code '415': {"message": "Unsupported Media Type"}

I'm not sure if that's a common use case.. the API we are calling is a SaaS product that we can't influence.

We're using terraform 1.6.1 ; restapi v1.18.2

thanks.