Get Parameters/Attributes list of an Action in VRO.

Hi,

I have a scenario like need to get parameters/attribute list of an action.

For example:  getUser action with 3 parameters like this getUser(param1,param2,param3);

is it possible to get all parameters of get User action?

I have tried with System.getContect();//But Not giving any result.

Please help me to find good way to get all params list.

Thank you in advance.!!!!