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@Override
    public void processEvent(ComponentSystemEvent event) throws AbortProcessingException {
        if(event instanceof PostAddToViewEvent) {
            FacesContext context = getFacesContext();
            UIViewRoot root = context.getViewRoot();
            
            boolean isPrimeConfig;
            try {
                isPrimeConfig = Class.forName("org.primefaces.config.PrimeConfiguration") != null;
            } catch (ClassNotFoundException e) {
                isPrimeConfig = false;
            }

            String[] resources = (isPrimeConfig) ? MODERN_RESOURCES : LEGACY_RESOURCES;

            for(String res : resources) {
                UIComponent component = context.getApplication().createComponent(UIOutput.COMPONENT_TYPE);
                if(res.endsWith("css"))
                    component.setRendererType("javax.faces.resource.Stylesheet");
                else if(res.endsWith("js"))
                    component.setRendererType("javax.faces.resource.Script");

                component.getAttributes().put("library", "primefaces");
                component.getAttributes().put("name", res);

                root.addComponentResource(context, component);
            }
        }
    }
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