':param sorts: A list of (key, direction) tuples.
direction: True == ASC, False == DESC
:param limit: maximum number of items to return
:param page_reverse: True if sort direction is reversed.
:param marker: the last item of the previous page; when used, returns
next results after the marker resource.'

def __init__(self, sorts=None, limit=None, page_reverse=None, marker=None):

    self.sorts = sorts
    self.limit = limit
    self.page_reverse = page_reverse
    self.marker = marker
