http://i2p-javadocs.i2p/net/i2p/addressbook/Subscription.html
Object clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait Constructor Details Subscription public Subscription ( String location, String etag, String lastModified, String lastFetched) Construct a Subscription pointing to the address book at location, that
was last read at the time represented by etag and lastModified. Parameters: location - A String representing a url to a remote address book.