boolean () { if (myOrderRootPointerContainers.size() != mySource.myOrderRootPointerContainers.size()) return true; for (final OrderRootType type : myOrderRootPointerContainers.keySet()) { final VirtualFilePointerContainer container = myOrderRootPointerContainers.get(type); final VirtualFilePointerContainer otherContainer = mySource.myOrderRootPointerContainers.get(type); if (container == null || otherContainer == null) { if (container != otherContainer) return true; } else { final String[] urls = container.getUrls(); final String[] otherUrls = otherContainer.getUrls(); if (urls.length != otherUrls.length) return true; for (int i = 0; i < urls.length; i++) { if (!Comparing.strEqual(urls[i], otherUrls[i])) return true; } } } return false; }