rename back methods: mapSourceValue, mapTargetValue, reduceValue -> mapSource, mapTarget, reduce; don't pass their arguments as objects (to make them similarto free functions mapSource, mapTarget, reduce that will eventually take another, optional argument - path - with default value)
rename back methods: mapSourceValue, mapTargetValue, reduceValue -> mapSource, mapTarget, reduce; don't pass their arguments as objects (to make them similarto free functions mapSource, mapTarget, reduce that will eventually take another, optional argument - path - with default value)

fictitious/antireflection,fictitious/antireflection