if (role != null) {
String url = USER_ADMIN_URL + ((User) accreditable).getId() + ".html";
DefaultPolicy policy = buildSubtreePolicy(manager, url);
Credential credential = policy.getCredential(accreditable);
if (credential != null && credential.contains(role)) {
policy.removeRole(accreditable, role);
}
saveSubtreePolicy(url, policy);
}
}
}