Exam 70-483 topic 1 question 15 discussion

FaitForFullGCApproach() returns only a status, doesn't settings any behaviour (https://docs.microsoft.com/en-us/dotnet/api/system.gc.waitforfullgcapproach?view=net-5.0). Also, there is written: "You need to ensure that the garbage collector does not release the object's resources until the process completes.", so, you're dealing with any 3rd party resources and those are usually managed with IDisposable pattern and with SupressFinalize() you inform CLR that you're going manage those resources by yourself release including.