How to clear all cache of whole app

[Najamus]

i can't be able to create Storage shared object its throw an error id not add transformer,

My Disk name is same only change transformer while saving different model in cache.

Now i want to clear all cache of app while user tap on clear cache without knowing all transformer type.

i'm trying but not find a way how to do that.

kindly share some details how can i achieve it

Thanks