def identify( name: nil, net: nil, cc: nil, imc: nil, ssc: nil, **nn )
      name || { net: net, cc: cc, imc: imc, ssc: ssc }.merge( nn )
    end
def identify( name: nil, net: nil, cc: nil, imc: nil, ssc: nil, **nn )
      name || { net: net, cc: cc, imc: imc, ssc: ssc }.merge( nn )
    end
Helper method specifying how a simulation is identified by arguments.