Idempotency elastic search when use dot net core with CreateIndexDescriptor

[Mahmood_Palangi]

Elasticsearch 8.1.3:

NEST 7.17.2:

we have a rest api for persist and index data in Elasticsearch db and we want if Index don't exist create index but don't use automap() for mapping and setting because we use char filter and tokenfilter in create index
please guid me !