def add_callee(self, function, callee):
        func, callees = self.entries[function.id]
        try:
            entry = callees[callee.id]
        except __HOLE__:
            callees[callee.id] = callee
        else:
            entry.samples += callee.samples
dataset/ETHPy150Open binaryage/firelogger.py/gprof2dot.py/SharkParser.add_callee