/** Conceals the membership. */
public void conceal(GHUser u) throws IOException {
root.retrieveWithAuth3("/orgs/" + login + "/public_members/" + u.getLogin(), null, "DELETE");
}
/** Publicizes the membership. */
public void publicize(GHUser u) throws IOException {
root.retrieveWithAuth3("/orgs/" + login + "/public_members/" + u.getLogin(), null, "PUT");
}