def getTransferable(self, rawVariables):
        raise NotImplementedError
Given the JSON data, figure out what kind of entity lies within.
dataset/ETHPy150Open rwl/muntjac/muntjac/event/dd/drag_source.py/IDragSource.getTransferable--crossover with--dataset/ETHPy150Open heiskr/sagefy/server/modules/entity.py/get_kind