How to repeat Reference Lines option from basic line chart into custom extension?

[Nost]

If i use just

addons: {uses: 'addons',}

then only Add-ons panel shows up, but empty inside. In google I found a lot examples of addition Data handle inside of Add-ons, but zero info about how to add reference lines

[jprdonnelly]

@Nost - some options available in the client may not be available when creating an Extension or Mashup, in that they are provided by the Sense client rather than the chart object itself. This link may help?