def __init__(self, legacyObserver):
        self.legacyObserver = legacyObserver
:return: the top item
dataset/ETHPy150Open twisted/twisted/twisted/logger/_legacy.py/LegacyLogObserverWrapper.__init__--crossover with--dataset/ETHPy150Open algorhythms/LintCode/archive/Sliding Window Median TLE.py/Heap.pop