class
 CompositeStyleSheet
            animations:        
                            hasMediaQueries:Bool        
                            addAnimation(animation:AnimationKeyFrames):Void        
                            addStyleSheet(styleSheet:StyleSheet):Void        
                            clear(styleSheetName:String):Void        
                            findAnimation(id:String):AnimationKeyFrames        
                            findMatchingRules(selector:String):Array<RuleElement>        
                            findRule(selector:String):RuleElement        
                            findStyleSheet(styleSheetName:String):StyleSheet        
                            getAllRules():Array<RuleElement>        
                            getAnimation(id:String, create:Bool = true):AnimationKeyFrames        
                            parse(css:String, styleSheetName:String = "default", invalidateAll:Bool = false):Void        
                            removeStyleSheet(styleSheet:StyleSheet):Void        
                    