'Get the usage data for a server.'

def show_server_diagnostics(self, server_id):

    (resp, body) = self.get(('servers/%s/diagnostics' % server_id))
    body = json.loads(body)
    schema = self.get_schema(self.schema_versions_info)
    self.validate_response(schema.show_server_diagnostics, resp, body)
    return rest_client.ResponseBody(resp, body)
