[BUG] OpenSearch.indices.exists('someValue') returns True when someValue is just an alias

[alexdunnjpl]

What is the bug?

Given index myIndex and corresponding alias myAlias, OpenSearch.indices.exists('myAlias') returns True when it should return False (or opensearch-py docs should make the intended behaviour clear, if this is not a bug).

How can one reproduce the bug?

Create an index and alias, as given above, instantiate an OpenSearch client, and call client.indices.exists('myAlias'), observing return value True

What is the expected behavior?

indices.exists('myAlias') should return False, as no index with that name exists.

What is your host/environment?

RHEL8, opensearch-py==2.6

Do you have any screenshots?

Do you have any additional context?

Add any other context about the problem.