Creating Polynomial Trend Lines in PowerBI Charts

[giovanna8988]

How do you create a polynomial trend line in a line chart in PowerBI? I see in the link below the feature is marked as completed, but can't find any resources on how to do it.

Microsoft Idea (powerbi.com)

Thanks in advance!

[KerKol]

According to the link, the idea for a trend line has been completed, the comments asked for a polynomial trend line but that was not stated in the original idea. 

You can create a polynomial trend line with some custom visuals e.g. Deneb. 

Regression | Vega-Lite