Current implementation calls: ServletRequest.getParameter(String) with
the specified name if the name/value pair was not set calling
ItsNatEvent.setExtraParam(String,Object) .
Current implementation calls: ServletRequest.getParameter(String) with
the specified name if the name/value pair was not set calling
ItsNatEvent.setExtraParam(String,Object) .
Parameters: name - the name to search for. the value carried with the specified name.