JSON Patch not working with PATCH method

Suppose I have a custom resource like this:

```yaml
---
apiVersion: example.com/v1
kind: Example
metadata:
# ...
spec:
foo: "bar"
```

When calling the following method:

```javascript
client.apis['example.com'].v1.namespace('default').examples('name').patch({
body: [ { op: "add", path: "/spec/foo", value: "baz" } ],
headers: {
'content-type': 'application/json-patch+json'
}
})
```

A `422` error is received with the following error message:

```
"" is invalid: patch: Invalid value: "[{\"op\":\"add\",\"path\":\"/spec/foo\",\"value\": \"baz\"}]": couldn't get version/kind; json parse error: json: cannot unmarshal array into Go value of type struct { APIVersion string "json:\"apiVersion,omitempty\""; Kind string "json:\"kind,omitempty\"" }
```

Start from the client.apis...patch entry point shown in the report and reproduce the request against the Example custom resource with the supplied JSON Patch body and content type. Trace how the patch body is serialized and sent; done means the API accepts the request and updates spec.foo from "bar" to "baz".

Written by the indexing model from the issue text.