restSetResponse content

Well, this is an extremely frustrating function. Especially for produces="application/json"

Depending on what you set the status to, your content is overridden by messages or default templates.

A few test functions:

status 401, 404 return body with html default template instead of specified content

//test function for 404 - returns html default template
remote void function notfound()
	httpmethod="GET"
	restpath="/not-found"
{
	response = {
		content: "Oops, not found",
		status: 404
	};
	restSetResponse(response);					
}

status 422 returns body with html "The custom error module does not recognize this error."

//test function for 422 - returns "The custom error module does not recognize this error."
remote void function UnprocessableEntity()
	httpmethod="GET"
	restpath="/unprocessable-entity"
{
	response = {
		content: "Oops, unprocessable entity",
		status: 422
	};
	restSetResponse(response);					
}

 
The purpose of having produces="application/json" was to always have the body/content a JSON structure -
which obviously isn't going to happen if my content is ignored. For example -

//json structure for errors
private Struct function handlerError( required string funcName, required any e)
{
	var funcResp	    = structNew();
        funcResp.error	    = true;
        funcResp.msg	    = ARGUMENTS.e.message;
        funcResp.type	    = ARGUMENTS.funcName & " -> " & ARGUMENTS.e.type;
        funcResp.error_code = ARGUMENTS.e.errorCode;

        return SerializedJSON(funcResp);
}

// should return for 422
{"error":true,"msg":"Oops, unprocessable entity","type":"Unprocessible Entity","error_code":"422"}
// should return for 404
{"error":true,"msg":"Oops, not found","type":"Not Found","error_code":"404"}

How can I override the override, so my content is returned in the body?
Environment: Windows Server 2012R2 v6.2, CF2016, IIS v8