
The None datasource is the last resort fallback datasource. It is identifiable by a property 'is_disconnected' that indicates that the datasource used is "not connected to a datasource". This will allow any thing that needs to run to still run in the absense of a DataSource. Also, we add a logging of the datasource found in final_message, and a warning if the None datasource is found.
Description
RETIRED, Cross-platform instance initialization