Tempus: Add warning about workingState equal to null.
Created by: ccober6
Closes #3847 (closed)
@trilinos/tempus
Description
Add warning if workingState is null.
Motivation and Context
Users can request the workingState when it is not valid. This gives them a warning that it is not valid.
Checklist
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My commit messages mention the appropriate GitHub issue numbers. -
My code follows the code style of the affected package(s). -
All new and existing tests passed. -
No new compiler warnings were introduced.