Bug 15604 Promote Fill arguments on method completion to a real preference
It is still in work in progress but it has become an established feature by now. Promote the preference to the code assist preference page.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/ContentAssistPreference.java
public final static String ADD_IMPORT= "content_assist_add_import";	 
	
	private static Color getColor(IPreferenceStore store, String key, IColorManager manager) {
		RGB rgb= PreferenceConverter.getColor(store, key);
		return manager.getColor(rgb);
	}
	
	private static Color getColor(IPreferenceStore store, String key) {
		JavaTextTools textTools= JavaPlugin.getDefault().getJavaTextTools();
		return getColor(store, key, textTools.getColorManager());
	}
	
	private static JavaCompletionProcessor getJavaProcessor(ContentAssistant assistant) {
		IContentAssistProcessor p= assistant.getContentAssistProcessor(IDocument.DEFAULT_CONTENT_TYPE);
		if (p instanceof JavaCompletionProcessor)
			return  (JavaCompletionProcessor) p;
		return null;
	}
	
	private static JavaDocCompletionProcessor getJavaDocProcessor(ContentAssistant assistant) {
		IContentAssistProcessor p= assistant.getContentAssistProcessor(JavaPartitionScanner.JAVA_DOC);
		if (p instanceof JavaDocCompletionProcessor) 
			return (JavaDocCompletionProcessor) p;
		return null;
	}
	
	private static void configureJavaProcessor(ContentAssistant assistant, IPreferenceStore store) {
		JavaCompletionProcessor jcp= getJavaProcessor(assistant);
		if (jcp == null)
			return;