code: public Assertion newAssertion(final AuthnStatement authnStatement, final String issuer,
                                    final ZonedDateTime issuedAt, final String id) {
          val list = new ArrayList<Statement>();
          list.add(authnStatement);
          return newAssertion(list, issuer, issuedAt, id);
      }
docs: Create a new SAML1 response object.
  
  @param authnStatement the authn statement
  @param issuer         the issuer
  @param issuedAt       the issued at
  @param id             the id
  @return the assertion