What is the result of calling the map controller method using the following HTTP request?

POST localhost:8080/map
{"b" : "b", "d" : "d"}

@RestController
public class SampleController {
    @RequestMapping("/map")
    public String map(@RequestBody SampleObject sampleObject) {
        return sampleObject.getB() + sampleObject.getC();
    }
}

public class SampleObject {
    String b;
    String c;
    public String getB() { return b; }
    public void setB() { this.b = b; }
    public String getC() { return c; }
    public void setC() { this.c = c; }
}