pub fn simplify<T: TileParent + TileChildren1 + Debug, S: BuildHasher>(
tiles: &HashSet<T, S>,
minzoom: Option<u8>,
) -> HashSet<T>pub fn simplify<T: TileParent + TileChildren1 + Debug, S: BuildHasher>(
tiles: &HashSet<T, S>,
minzoom: Option<u8>,
) -> HashSet<T>