buttons property
The individual buttons for the map navigation. This usually includes
the zoom in and zoom out buttons. Properties for each button is
inherited from
mapNavigation.buttonOptions, while
individual options can be overridden. But default, the onclick, text
and y options are individual.
API Docs: https://api.highcharts.com/highcharts/mapNavigation.buttons
Implementation
HighchartsMapNavigationButtonsOptions? buttons;