default-extensions: LambdaCase ScopedTypeVariables OverloadedStrings RecordWildCards RankNTypes GADTs TypeFamilies ConstraintKinds TypeOperators DataKinds PolyKinds UndecidableInstances InstanceSigs EmptyCase FunctionalDependencies MultiWayIf ViewPatterns StandaloneDeriving DefaultSignatures TemplateHaskell FlexibleInstances FlexibleContexts GeneralizedNewtypeDeriving
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