SearchHint

Represents a hint to the search index engine.

JSON representation 
{

  // Union field index_type can be only one of the following:
  "useIndex": {
    object (IndexHint)
  },
  "useKnn": boolean
  // End of list of possible types for union field index_type.
}
Fields
Union field index_type. The type of index to use. index_type can be only one of the following:
useIndex

object (IndexHint)

Optional. Specifies that the search should use a particular index.
useKnn

boolean

Optional. If set to true, the search will use the system's default K-Nearest Neighbor (KNN) index engine.

IndexHint

Message to specify the index to use for the search.

JSON representation 
{
  "name": string
}
Fields
name

string

Required. The resource name of the index to use for the search. The index must be in the same project, location, and collection. Format: projects/{project}/locations/{location}/collections/{collection}/indexes/{index}