Style Portions of Line Chart Trends

Wondering if there is currently a direct or indirect way to apply styles (e.g. “line: {dash: ‘dot’}”) to a segment/portion/region of a trace or data series, as is done here:

Unfortunately, line style options are configurable at the trace level at the moment.

To highlight a special region, I’d recommend splitting your (x,y) data into multiple traces, one per style configurable.