message: search: discourage use of IndexableDocument in the frontend
diff: @@ -88,7 +88,10 @@ export interface SearchDocument {
  }
  /**
  - * Properties related to indexing of documents.
  + * Properties related to indexing of documents. This type is only useful for
  + * backends working directly with documents being inserted or retrieved from
  + * search indexes. When dealing with documents in the frontend, use
  + * {@link SearchDocument}.
  * @beta
  */
  export type IndexableDocument = SearchDocument & {
  