XLA Cluster is not visible in tensorboard graph

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I enabled XLA in bert model and using the XLA flags check that it's generated XLA cluster.
https://www.tensorflow.org/xla#inspect_compiled_programs

I added XLA generated files in the attachment.

tensorboard. Any clue [xla.zip](https://github.com/tensorflow/tensorboard/files/8578097/xla.zip)

However, it's not visible in tensorboard. Any clue?