Fluent API Documentation missing

[bmontalvoDD]

Using Elastic.Clients.Elasticsearch 8.14 for .NET, I cannot for the life of me figure out how to make a query using the Highlight fluent API. Is there any documentation other than the simplistic query shown on Searching for documents? I can get the results I need using the Query DSL shown below:

  "query": {
    "wildcard": {
      "description": "cat*"
    }
  },
  "highlight": {
    "fields": {
      "description": {
        "type": "plain",
        "fragment_size": 0,
        "number_of_fragments": 0,
        "highlight_query": {
          "wildcard": {
            "description": "cat*"
          }
        },
        "boundary_scanner": "chars",
        "boundary_max_scan": 20, 
        "fragmenter": "simple",
        "pre_tags": ["<em>"],
        "post_tags": ["</em>"],
        "require_field_match": true
      }
    }
  }
}

Any help would be greatly appreciated, even the GPTs are stumped as to how to use the Fluent API. I wish I could put the raw JSON in a request but that appears to not be working since I'm getting this error
Reason: "unknown query [raw_json]" CausedBy: "Type: named_object_not_found_exception Reason: "[2:17] unknown field [raw_json]""