@Override
    public String description() {
        return "Simply removes the realm of the requesting authentication identity ('principal') if and only if "+
               "the realm matches the server's realm, the server's XMPP domain name, or any of the pre-approved "+
               "realm names. Otherwise the input value (authentication identity) is returned as-is, causing it to " +
               "be used as the authorization identity (the identity to act as).";
    }
Returns a description of the Policy

@return The description of the Policy.
xmppserver/src/main/java/org/jivesoftware/openfire/auth/DefaultAuthorizationMapping.java