protected Method findMatchingMethod(String methodName, Class<?> k, int nArgs) {

         Method[] methods = k.getMethods();

         if(methods == null) {

             methods = k.getMethods();

         }

         for (Method method : methods) {

             boolean hasMatchingName = method.getName().equals(methodName);

             if(hasMatchingName && method.isVarArgs()){

                 return method;

             }

             boolean hasMatchingArguments = method.getParameterTypes().length == nArgs;

             if (hasMatchingName && hasMatchingArguments) {

                 return method;

             }

         }

         return null;

     }

 protected Object[] convertArgs(Method method, Object[] args) {

         Type[] argumentParameterTypes=null;

         if(method.isVarArgs()){

             return args;

         }else{

             argumentParameterTypes = method.getGenericParameterTypes();

         }

         return ConverterSupport.convertArgs(args, argumentParameterTypes);

     }

 public Object methodInvoke(Method method, Object instance, Object... convertedArgs) throws Throwable {

         try {

             if(method.isVarArgs()){

                 String[] s = new String[convertedArgs.length];

                 int i =0;

                 for(Object arg:convertedArgs){

                     s[i]=arg.toString();

                     i++;

                 }

                 return method.invoke(instance, (Object)s);

             }else{

                 return method.invoke(instance, convertedArgs);

             }

         } catch (InvocationTargetException e) {

             if(e.getCause() != null){

                 throw e.getCause();

             }else{

                 throw e.getTargetException();

             }

         }

     }