@Override
    public boolean isSuccess() {
        boolean isSuccess = false;
        ClientResponse.Status s = bcr != null? bcr.getClientResponseStatus(): null;
        isSuccess = s!=null? (s.getFamily() == javax.ws.rs.core.Response.Status.Family.SUCCESSFUL): false;
        return isSuccess;
    }
Returns the raw entity if available from the response 
@return
@throws IllegalArgumentException
ribbon-httpclient/src/main/java/com/netflix/niws/client/http/HttpClientResponse.java