def perform(self, cfg):
self.__src = self._load(cfg[Transformation.__CFG_KEY_LOAD])<EOL>self.__transform(cfg[Transformation.__CFG_KEY_TRANSFORM])<EOL>self.__cleanup(cfg[Transformation.__CFG_KEY_CLEANUP])<EOL>self.__save(cfg[Transformation.__CFG_KEY_SAVE])<EOL>
Performs transformation according to configuration
:param cfg: transformation configuration