Feather designer - content block selector

I'm attempting to create a designer and add components as follows:

docs.sitefinity.com/feather-use-components-to-resolve-script-dependencies

docs.sitefinity.com/feather-use-single-content-item-selectors

The 2nd link demonstrates how to select news content by using an angular directive with the selector - "sf-news-selector". I want to select a content block but I can't find this anywhere in the "documentation". Has anyone achieved this?

Thanks in advance

Hi Brin,

Do you want to select"shared content block"? Similar functionality has default "Content block"widget. You can find it's source code here: github.com/.../Mvc (designer view DesignerView.UseShared.cshtml)