'Store a new item or completely replace an existing item
in Amazon DynamoDB.
:type expected_value: dict
:param expected_value: A dictionary of name/value pairs that
you expect.  This dictionary should have name/value pairs
where the name is the name of the attribute and the value
is either the value you are expecting or False if you expect
the attribute not to exist.
:type return_values: str
:param return_values: Controls the return of attribute
name-value pairs before then were changed.  Possible
values are: None or \'ALL_OLD\'. If \'ALL_OLD\' is
specified and the item is overwritten, the content
of the old item is returned.'

def put(self, expected_value=None, return_values=None):

    return self.table.layer2.put_item(self, expected_value, return_values)
