Methods and systems for a topology service providing an interface for specifying a topology and answering {HEAD ~ queries} regarding {TAIL ~ the topology} 
Methods and systems for a topology service providing an interface for specifying a topology and answering { HEAD ~ queries } regarding { TAIL ~ the topology }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL