Provides definition for the standard JXTA Peer Info Service. There
is no JXSE object directly associated with the peer. The state of the
current peer is expressed through the {@link net.jxta.peergroup.PeerGroup}
object.
@see net.jxta.peergroup.PeerGroup
@see net.jxta.protocol.PeerAdvertisement
@see net.jxta.id.ID
@see JXTA Protocols Specification : Peer Info Protocol