# Couldn't find the API reference for class DvrBasePlaylistRequestDelegate
**URL:** https://community.wowza.com/t/couldnt-find-the-api-reference-for-class-dvrbaseplaylistrequestdelegate/95695
**Category:** Wowza Streaming Engine
**Tags:** wowza-streaming-server-java-api
**Created:** [December 6, 2022, 1:09pm UTC](https://community.wowza.com/t/couldnt-find-the-api-reference-for-class-dvrbaseplaylistrequestdelegate/95695 "2022-12-06T13:09:57Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Wendong\_Li](https://community.wowza.com/u/Wendong_Li)
#### Post date: [December 6, 2022, 1:09pm UTC](https://community.wowza.com/t/couldnt-find-the-api-reference-for-class-dvrbaseplaylistrequestdelegate/95695/1 "2022-12-06T13:09:57Z")
I’m trying to learn how to create a custom DVR playlist request delegate by following this doc:
[https://www.wowza.com/docs/how-to-use-wowza-ndvr-playlist-request-api](https://www.wowza.com/docs/how-to-use-wowza-ndvr-playlist-request-api)
However, I couldn’t find the api documentation of several classes used in the sample:
com.wowza.wms.dvr.DvrBasePlaylistRequestDelegate
com.wowza.wms.dvr.DvrPlaylistRequest
The api documentation I’m looking at is:
[https://www.wowza.com/resources/serverapi/](https://www.wowza.com/resources/serverapi/)
Are these classes not fully public? It would be helpful to have their documentation though if we are supposed to use them for creating the delegate.
Thanks,
Wendong
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### Author:  [@Jason\_Tuchler](https://community.wowza.com/u/Jason_Tuchler)
#### Post date: [December 13, 2022, 4:49pm UTC](https://community.wowza.com/t/couldnt-find-the-api-reference-for-class-dvrbaseplaylistrequestdelegate/95695/2 "2022-12-13T16:49:33Z")
@Wendong_Li That is correct, and a good request, those classes do not currently have publicly facing documentation. I will create a feature request for them to be potentially available in the future.