docs: def getLocalFactories(self, From, to, protocolName):
          """
          Returns a list of 2-tuples of (protocolFactory, description) to handle
          this from/to/protocolName
  
          @param From:
          @param to:
          @param protocolName:
  
          @return:
  
          """
          result = []
          x = self.localFactoriesMapping.get((to, protocolName), ())
          result.extend(x)
          y = self.protocolFactoryFactory(From, to, protocolName)
          result.extend(y)
          return result