':type layer2: :class:`boto.dynamodb.layer2.Layer2`
:param layer2: A `Layer2` api object.
:type response: dict
:param response: The output of
`boto.dynamodb.layer1.Layer1.describe_table`.'

def __init__(self, layer2, response):

    self.layer2 = layer2
    self._dict = {}
    self.update_from_response(response)
