ArcGIS Runtime support for 'plugin datasource'

[MattEsri]

Does the new Runtime support 'the Plugin Datasource' concept (e.g., for .NET)?  I know the older ArcEngine Runtime (circa 2005) used to support it for C++.  Looking to source the ESRI map inside our desktop product with a non-ESRI datamodel and was hoping to implement ESRI Plugin Datasource to achieve this.

[MichaelBranscomb]

ArcGIS Runtime doesn't share the same Plugin Datasource model as ArcGIS Engine but supports many data/layer types and provides layers/overlays that can be used to render other content (GraphicsOverlay and FeatureCollectionTable).

Can you share any more information about the data format you need to support?