private String initPathParameter() {
   StringBuffer path = new StringBuffer();
   StringBuffer slash = new StringBuffer("/");
   path.append(PATH)
       .append(slash)
       .append(service)
       .append(slash)
       .append(returnType)
       .append(slash)
       .append(domain);
   if (method == GET || method == DELETE) {
     StringBuffer toAppend = new StringBuffer();
     for (ParameterEntry<String, String> entry : parameters) {
       if (toAppend.length() == 0) {
         toAppend.append("?");
       } else {
         toAppend.append("&");
       }
       toAppend.append(entry.getKey());
       toAppend.append("=");
       toAppend.append(entry.getValue());
     }
     path.append(toAppend);
   }
   return path.toString();
 }
 /**
  * To build query.
  *
  * @return building response
  */
 public String buildBody() {
   StringBuffer body = new StringBuffer("{\"parameters\":[{");
   for (ParameterEntry<String, String> entry : parameters) {
     body.append("\"" + entry.getKey() + "\"" + ":" + "\"" + entry.getValue() + "\",");
   }
   body.append("}]}");
   return body.toString();
 }