AAPI OpenAPI schema is missing

[igor-lukyanov]

As per https://www.ankr.com/docs/advanced-api/overview/ ,

AAPI Methods Supported
To get all supported AAPI methods in the OpenAPI-formatted aapi-swagger JSON, use the following request:
curl --location 'https://rpc.ankr.com/multichain/79258ce7f7ee046decc3b5292a24eb4bf7c910d7e39b691384c7ce0cfb839a01'
--header 'Content-Type: application/json'
--data '{
"jsonrpc": "2.0",
"method": "docs_schema",
"params": {},
"id": 1
}'

Meanwhile, I get the following error while doing that call:
{"id":1,"jsonrpc":"2.0","error":{"code":-32601,"message":"the method docs_schema does not exist/is not available"}}