```julia using SparsityDetection function f(du, u, p, t) Q = reinterpret(Complex{Float64}, u) dQ = reinterpret(Complex{Float64}, du) dQ .= Q end input = rand(Float64, 4) output = similar(input) sparsity_pattern = sparsity!((dx, x) -> f(dx, x, [], 0), output, input) jac = Float64.(sparse(sparsity_pattern)) colors = matrix_colors(jac) ```