The search inmemory driver to mock the search backend service.
@inheritdoc
| Name | Type | Description | 
|---|---|---|
| search | Observable< DaffSearchDriverResponse> | Searches for entities according to the specified query. This method provides substantially more information than `incremental`. Its intended use is populating a page of search results. | 
| incremental | Observable< DaffSearchResultCollection> | Rapidly searches for entities. This is intended to be called as the user types their search query. Less information is requested in comparison to `search`. |