i can not get the raw property by Map

[Linindoo]

i want get a map of property by "getProperty" method,but the result does not meet all of my expectations，the raw key 'A_B' has bean convert to 'A-B',how can i get the raw map key?
the Priority of PropertyCatalog.GENERATED is over PropertyCatalog.RAW at your source code, Is it better if this is configurable
thanks.
i has try to use 'getProperties' method to get the map,but it is too simple without structure.