String buildUriForNamedBlob(String accountName, String containerName, String blobName) {
    return String.format("/named/%s/%s/%s", accountName, containerName, blobName);
  }
The http request uri for named blob.
@param accountName The account name.
@param containerName The container name.
@param blobName the blob name.
@return The http request uri.
ambry-frontend/src/integration-test/java/com/github/ambry/frontend/FrontendIntegrationTestBase.java