* Create an RSTR for Issue from the given arguments. TokenType should be Issue.
* Any of the arguments can be null since they are all optional, but one of RequestedSecurityToken or RequestedProofToken should be returned
*/
public RequestSecurityTokenResponse createRSTRForIssue(final URI tokenType, final URI context, final RequestedSecurityToken token, final AppliesTo scopes, final RequestedAttachedReference attachedReference, final RequestedUnattachedReference unattachedRef, final RequestedProofToken proofToken, final Entropy entropy, final Lifetime lifetime) throws WSTrustException {
final RequestSecurityTokenResponse rstr =
new RequestSecurityTokenResponseImpl(tokenType, context, token, scopes,
attachedReference, unattachedRef, proofToken, entropy, lifetime, null);
return rstr;
}