data property
An array of data points for the series. For the map series type, points can
be given in the following ways:
- 
An array of numerical values. In this case, the numerical values will be interpreted as valueoptions. Example:
- 
An array of arrays with 2 values. In this case, the values correspond to [hc-key, value]. Example:
- 
An array of objects with named values. The following snippet shows only a few settings, see the complete options set below. If the total number of data points exceeds the series' turboThreshold, this option is not available. 
API Docs: https://api.highcharts.com/highmaps/series.map.data
Implementation
List<List<dynamic>>? data;