[BUG] - search_pipeline not properly implemented for OpenSearchClient.search method

[Marco1402]

What is the bug?

When trying to call the OpenSearchClient.search method with the search pipeline argument, it raises a 400 illegal_argument_exception error. Even though the parameter is exposed and mentioned in the API reference of that class.

How can one reproduce the bug?

Create OpenSearchClient instance and call .search method with search_pipeline argument.

What is the expected behavior?

Carrying out a search with a custom search_pipeline

What is your host/environment?

Ubuntu

Do you have any screenshots?

results = oss_client.search(index=index_name, body=query, search_pipeline=search_pipeline)

Do you have any additional context?

[dblock]

Want to try to write a (failing) test for this?

[Marco1402]

sorry, I misinterpreted the error message, thinking the parameter is deemed as invalid, thought it is the OS engine version that does not support it.