Seralize operation parameters as json(or other media type)

[timotheeguerin]

This is not something we supported in autorest but this is something available in openapi

See autorest issue where someone ask for support Azure/autorest#4773

{
  "summary": "Return list of Scripts",
  "parameters": [
    {
      "name": "ScriptQuery",
      "in": "header",
      "content": {
        "application/json": {
          "schema": {
            "$ref": "#/components/schemas/ScriptQuery"
          }
        }
      }
    }
  ]
}

From the openapi3 docs

Other Serialization Methods
style and explode cover the most common serialization methods, but not all. For more complex scenarios (for example, a JSON-formatted object in the query string), you can use the content keyword and specify the media type that defines the serialization format. For more information, see schema vs content.

Maybe could have something like that

@encode("application/json")
@query 
data: ComplexObject;

[bterlson]

Seems related to #2476?

[timotheeguerin]

Slightly though that one would I think just be style:deepObject in openapi3 so with our current way of specifying the params format it probably would be @query({format: "deepObject"}) or similar