module SafeModule

export pure_add, pure_multiply

pure_add(a::Int, b::Int)::Int = a + b
pure_multiply(a::Int, b::Int)::Int = a * b

function pipeline(x::Int)::Int
    y = pure_add(x, 10)
    z = pure_multiply(y, 3)
    return pure_add(z, y)
end

end