[ndnSIM] Obtaining Content Store Metrics

[Sam DeLaughter]

Hi All,

I'm having some trouble obtaining content store metrics.  I've installed 
ndn::CsTracer on my nodes and set a non-zero CS size for them, but the 
output file from the tracer always shows 0 cache hits and 0 cache misses 
for every node at every timestamp.  This happens both in my custom 
application and in the ndn-tree-cs-tracers example application.

I found a reference to ns3::ndn::cs::ContentStoreWithStats in the 
documentation, but can't seem to find its implementation anywhere in the 
current codebase.  Am I missing something, or has this feature not been 
fully implemented yet?

Thank You,
Sam