Method to get the opposite direction: Input = BlockFace, Output = BlockFace

Needed this for a plugin I'm whipping up, should be correct, tell me if something is wrong:

Code:

        public BlockFace getOppositeDirection(BlockFace dir){
            if (dir == BlockFace.UP){
                dir = BlockFace.DOWN;
            } else if (dir == BlockFace.DOWN){
                dir = BlockFace.UP;
            }  else if (dir == BlockFace.NORTH){
                dir = BlockFace.SOUTH;
            }  else if (dir == BlockFace.SOUTH){
                dir = BlockFace.NORTH;
            }  else if (dir == BlockFace.EAST){
                dir = BlockFace.WEST;
            }  else if (dir == BlockFace.WEST){
                dir = BlockFace.EAST;
            }
            return dir;
        }

Noobs r us, with blockfaces there is a .getOppositeFace method

EDIT by Moderator: merged posts, please use the edit button instead of double posting.