The priority is used to determine the best symbolizer to symbolize a network analysis layer. If multiple symbolizers apply to the network analysis layer, the one with the largest numeric value for priority is used to create and update the network analysis laye
NASymbolizer2 creates the default symbology for the input and output classes of an NASolver's NAContext. For example, the stops for a route solver are symbolized with located, unlocated or error symbols.
The INASymbolizer2 inteface is used by the various symbolizer objects (NARouteSymbolizer, NAClosestFacilitySymbolizer, NAServiceAreaSymbolizer, NAODCostMatrixSymbolizer) to reset an NALayer's symbology based on a seed color.