I was looking at the documentation for the _cat/indices api (https://www.elastic.co/guide/en/elasticsearch/reference/current/cat-indices.html), and I see that the normal list of headers returned is:
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
However, just a little lower in the documentation, they use a few new headers to display memory and merge operations that aren't part of the default list,
Is there a complete list available somewhere else of all of the headers for all of the _cat apis??