runtime' :: [MediaType] -> Maybe Int
runtime' (x:xs) =  case x of
    (Runtime a) -> Just a
    _ -> part' xs
runtime' :: [MediaType] -> Maybe Int
runtime' (x:xs) =  case x of
    (Runtime a) -> Just a
    _ -> part' xs
runtime' (x:xs) =  case x of
    (Runtime a) -> Just a
    _ -> part' xs