Could not find similarity in KnnQuery in Java Client?

Elastic Stack Elasticsearch
1

Could not find similarity in KnnQuery in Java Client?

2

Just giving detail

Does not has similarity attribute as below link has in their sample query

POST image-index/_search
{
  "knn": {
    "field": "image-vector",
    "query_vector": [1, 5, -20],
    "k": 5,
    "num_candidates": 50,
    "similarity": 36,
    "filter": {
      "term": {
        "file-type": "png"
      }
    }
  },
  "fields": ["title"],
  "_source": false
}
3

Any update on this ?? We are planning to upgrade our elasticsearch version from 8.7v to above to get benefit from "similarity" score functionality.

4

still not available in 8.10.3