public static void addStyleSheetResource(FacesContext context, String resourceName) {
        addStyleSheetResource(context, Constants.LIBRARY, resourceName);
    }
Adds a CSS resource from the default PrimeFaces library to the view.

@param context The FacesContext
@param resourceName The name of the CSS resource
primefaces/src/main/java/org/primefaces/util/ResourceUtils.java