* inital request
* refactored query execution failure callback to take exception
* added failure callback to execute and return
* added test for query execute and return
* updated params
* removed dead code
* addressed feedback; added multiple active result set support; updated tests
* addessed feedback and added testing and errors and verification
* change <= to ==
* changed name of trashQ to removedQuery
* Create backup task for execution
* Register backup to task service
* Fix backup task service
* Fix async methods
* Add backup unit test
* Add cancellation token to task service and fix other PR comments
* Add SR and fix other pr comments
* Add comments to methods
* Fixed backup cancel test and casing
* Change sleep time in test
