util.ValidateMetric(t, cluster, promInst, grpcDestinationQuery, 1)
			// By default, envoy histogram has 20 buckets, annotation changes it to 10
			if err := ValidateBucket(cluster, promInst, "a", "destination", 10); err != nil {
				t.Errorf("failed to validate bucket: %v", err)
			}
		})
}

func setupWasmExtension(t framework.TestContext) {

						if _, err := prom.QuerySum(c, appQuery); err != nil {
							util.PromDiff(t, prom, c, appQuery)
							return err
						}

						if err := ValidateBucket(c, prom, cltInstance.Config().Service, "source", expectedBuckets); err != nil {
							return err
						}

						return nil