default CompletableFuture<NamedBlobRecord> get(String accountName, String containerName, String blobName) {
    return get(accountName, containerName, blobName, GetOption.None, false);
  }
Look up a {@link NamedBlobRecord} by name.
@param accountName the name of the account.
@param containerName the name of the container.
@param blobName the name of the blob.
@return a {@link CompletableFuture} that will eventually contain either the {@link NamedBlobRecord} for the named
        blob or an exception if an error occurred.
ambry-api/src/main/java/com/github/ambry/named/NamedBlobDb.java