setAttributes
Apply attributes to the label text.
The attributes set with this function will be applied and merged with any other attributes previously effected by way of the property@Gtk.Label:use-underline or property@Gtk.Label:use-markup properties. While it is not recommended to mix markup strings with manually set attributes, if you must; know that the attributes will be applied to the label after the markup string is parsed.
Parameters
attrs
a struct@Pango.AttrList