def search_hits(self, sort_by='CreationTime', sort_direction='Ascending', 
                    page_size=10, page_number=1, response_groups=None):
        """
        Return a page of a Requester's HITs, on behalf of the Requester.
        The operation returns HITs of any status, except for HITs that
        have been disposed with the DisposeHIT operation.
        Note:
        The SearchHITs operation does not accept any search parameters
        that filter the results.
        """
        params = {'SortProperty' : sort_by,
                  'SortDirection' : sort_direction,
                  'PageSize' : page_size,
                  'PageNumber' : page_number}
        # Handle optional response groups argument
        if response_groups:
            self.build_list_params(params, response_groups, 'ResponseGroup')
                

        return self._process_request('SearchHITs', params, [('HIT', HIT),])