def __init__(self, data, source=None):
self.data = data
self.layout = RByteRange(owner=self)
if source:
self.source = source
def __init__(self, startKey, endKey, source=None):
self.layout = RByteRange(self, startKey, endKey)
if source:
self.source = source
def __init__(self, source=None):
self.keys = []
self.padding = []
self.layout = RByteRange(owner=self)
if source:
self.source = source
