def compareBulk(self, retina_name, body):
        """Bulk compare
        Args:
            retina_name, str: The retina name (required)
            body, ExpressionOperation: Bulk comparison of elements 2 by 2 (required)
            Returns: Array[Metric]
        """

        resourcePath = '/compare/bulk'
        method = 'POST'

        queryParams = {}
        headerParams = {'Accept': 'Application/json', 'Content-Type': 'application/json'}
        postData = None

        queryParams['retina_name'] = retina_name
        postData = body
        response = self.apiClient._callAPI(resourcePath, method, queryParams, postData, headerParams)
        return [metric.Metric(**r) for r in response.json()]