'Add a Batch to this BatchList.
:type table: :class:`boto.dynamodb.table.Table`
:param table: The Table object in which the items are contained.
:type keys: list
:param keys: A list of scalar or tuple values.  Each element in the
list represents one Item to retrieve.  If the schema for the
table has both a HashKey and a RangeKey, each element in the
list should be a tuple consisting of (hash_key, range_key).  If
the schema for the table contains only a HashKey, each element
in the list should be a scalar value of the appropriate type
for the table schema. NOTE: The maximum number of items that
can be retrieved for a single operation is 100. Also, the
number of items retrieved is constrained by a 1 MB size limit.
:type attributes_to_get: list
:param attributes_to_get: A list of attribute names.
If supplied, only the specified attribute names will
be returned.  Otherwise, all attributes will be returned.'

def add_batch(self, table, keys, attributes_to_get=None, consistent_read=False):

    self.append(Batch(table, keys, attributes_to_get, consistent_read))
