Show contours (lines of equal Z value) at automatically determined levels. # Arguments `base` - Show contours on the base of the plot (XY plane) `surface` - Show the contours on the surface itself `style` - Style of the contours `label` - Auto sets the label automatically and enables the legend, Fix() allows you specify a format string (using C style formatting), otherwise an empty string disable
( &mut self, base: bool, surface: bool, style: ContourStyle, label: AutoOption<&str>, levels: AutoOption<u32>, )