fourmolu-0.2.0.0: data/examples/declaration/signature/minimal/minimal-four-out.hs

class Foo a where
    {-# MINIMAL (==) | ((/=), foo) #-}

    {-# MINIMAL
        a
        | ( b, c, d
            | e
              , f
          )
          | g
        #-}

    (==) :: a -> a -> Bool
    (/=) :: a -> a -> Bool