This represents a MatchingEvents

  CatalogUpdate -> updates the catalog tags everytime a new supply or a demand is added
  SupplyUpdate -> updates the supplies
  DemandUpdate -> updates the demands
  NewMatch -> updates the matches

Enumeration Members

CatalogUpdate: "catalogUpdate"
DemandUpdate: "demandUpdate"
MatchUpdate: "matchUpdate"
SupplyUpdate: "supplyUpdate"