* Make IOS.setTaskScheduler() as public
* Make `IntegrationObjectSupport.setTaskScheduler()` as `public` and
remove all the overrides for visibility
* Fix Sonar smells for all the affected classes
* * Fix `throws Exception` for affected classes to avoid compilation errors
* * Fix "merely rethrow" smell
* Revert `throws Exception` for `AbstractEndpoint.destroy()`
* * Catch a couple exceptions from `destroy()`
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