This method takes as input a policy---for example, one that has been retrieved from the Relying Party Agent
(called here the 'Requester')---as well as a description of the Requester.
This method takes as input a policy---for example, one that has been retrieved from the Relying Party Agent
(called here the 'Requester')---as well as a description of the Requester.
Constructs a new rpps exception with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause).