Class type Chartjs.minorTicks
The minorTick configuration is nested under the ticks configuration in the minor
key. It defines options for the minor tick marks that are generated by the axis. Omitted options are inherited from ticks configuration.
method callback : 'a tick_cb Js_of_ocaml.Js.prop
Returns the string representation of the tick value as it should be displayed on the chart.
method fontColor : Color.t Js_of_ocaml.Js.t Js_of_ocaml.Js.optdef_prop
Font color for tick labels.