Timeline Chart is not a supported chart format

[francesco-loreti]

If I try to use the Timeline Chart I have this error:

timeline is not a supported chart format. Please use one of the following: line line_xy scatter bar venn pie pie_3d pie_c jstize sparkline meter map radar.

But into Google Charts API there is the Timeline Chart. Can you read about it at: https://google-developers.appspot.com/chart/interactive/docs/gallery/timeline#a-simple-example

If not supported, please add this feature

Thanks