How to get the body payload?

I am hoping this is a defect against documentation.

I am unable to retrieve the body payload for a POST operation.

Using the Swagger-Petstore sample, the POST to /pet has a body parameter defined as:

{
  "in": "body",
  "name": "body",
  "description": "Pet object that needs to be added to the store",
  "required": true,
  "schema": {
     "$ref": "#\/definitions\/Pet"
  }
}

Here is my sample code:

import io.swagger.models.Operation;
import io.swagger.models.Path;
import io.swagger.models.Swagger;
import io.swagger.models.parameters.Parameter;
import io.swagger.parser.SwaggerParser;

public class PetPostBody {

    public static void main(String[] args) {
	Swagger swagger = new SwaggerParser().read("http://petstore.swagger.io/v2/swagger.json");

	Path pet = swagger.getPath("/pet");
	Operation post = pet.getPost();
	Parameter body = null;
	for (Parameter param : post.getParameters()) {
	    if (param.getIn().equals("body"))
		body = param;
	}
	body.get???
    }
}

How do I retrieve the payload?

The only things that I can see (in debugger) for body is schema but that is access protected(?), and under that is genericRef (access private) that points to the definitions.

What am I missing?

Start with the Parameter, Operation, and SwaggerParser APIs used in the example, along with the Swagger-Petstore /pet definition. Determine the documented way to inspect a POST body parameter and its schema, then add a concise usage example and verify it against the referenced specification.