def __init__(self, input_time, input_value, id=None):
"""
id is optional and could be None
auto generate id is handled by FileStorageManager if id is None
"""
if id == None:
id = StorageManager.generateId()
StorageManager.store(str(id), ArrayTimeSeries(input_time, input_value))
self._id = str(id)
def __setitem__(self, index, value):
arrayts = StorageManager.get(self._id)
arrayts[index] = value
StorageManager.store(self._id, arrayts)