def doFlush(self, cname, flushExpression, flushType):
        """
        doFlush method enables specific content to be "flushed" from the
        cache servers.

        * Note: The flush API is limited to 1,000 flush invocations per hour
        (each flush invocation may include several objects). *
        """
        return self.client.service.doFlush(
            cname, flushExpression, flushType)