expr = z * log(2 * z) + 3
graphics(
    domain_coloring(expr, (z, -2-2j, 2+2j)),
    complex_vector_field(expr, (z, -2-2j, 2+2j),
        n=26, scalar=False, use_cm=False, normalize=True,
        show_in_legend=False,
        quiver_kw={"color": "k", "pivot": "tip"}),
    grid=False)
# Expected:
## Plot object containing:
## [0]: complex domain coloring: z*log(2*z) + 3 for re(z) over (-2.0, 2.0) and im(z) over (-2.0, 2.0)
## [1]: 2D vector series: [(re(_x) - im(_y))*log(Abs(2*_x + 2*_y*I)) - (re(_y) + im(_x))*arg(_x + _y*I) + 3, (re(_x) - im(_y))*arg(_x + _y*I) + (re(_y) + im(_x))*log(Abs(2*_x + 2*_y*I))] over (_x, -2.0, 2.0), (_y, -2.0, 2.0)