/**
 * Checks if this organization has the specified user as a member.
 */
public boolean hasMember(GHUser user) {
    try {
        root.retrieve().to("/orgs/" + login + "/members/"  + user.getLogin());
        return true;
    } catch (IOException ignore) {
        return false;
    }
}

/**
 * Remove a member of the organisation - which will remove them from
 * all teams, and remove their access to the organization’s repositories.
 */
public void remove(GHUser user) throws IOException {
    root.retrieve().method("DELETE").to("/orgs/" + login + "/members/"  + user.getLogin());
}

/**
 * Checks if this organization has the specified user as a public member.
 */
public boolean hasPublicMember(GHUser user) {
    try {
        root.retrieve().to("/orgs/" + login + "/public_members/" + user.getLogin());
        return true;
    } catch (IOException ignore) {
        return false;
    }
}

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