An Update

A default text style is strongly recommended for every News article. Because this text style is used as the default for all components that display text, you can use this style to ensure that components will complement your overall design, even if they do not have other text styles defined. Later in this tutorial, you’ll override properties of this default style for specific roles and components.

The default text style for an article must have the name default and must be a component text style object located within the componentTextStyles property.