Hi, please check the folowing code in Request.Java.
This library is appending "?null" when GET is called without parameters.
Note: I'm using fly-rest 0.0.5
public String getUrl() { StringBuilder url = new StringBuilder(this.mUrl); if(HttpMethod.GET.equals(this.getHttpMethod())) { url.append('?').append(this.getParameters()); } return url.toString(); }