// testing of the add collection method
public void testAddCollection() {
DelegationPermission dp = new DelegationPermission("\"AAA\" \"BBB\"");
PermissionCollection pc1 = dp.newPermissionCollection();
PermissionCollection pc2 = dp.newPermissionCollection();
assertNotSame(pc1, pc2);
pc1.add(new DelegationPermission("\"BBB\" \"AAA\""));
try {
pc1.add(new SecurityPermission("aaa"));
fail("should not add non DelegationPermission");