@Nullable private static Library actualizePackagesLibrary( @NotNull final Project project, @Nullable final DartSdk sdk) { if (sdk == null || StringUtil.compareVersionNumbers(sdk.getVersion(), "1.12") < 0) return null; final DartLibInfo libInfo = collectPackagesLibraryRoots(project, sdk); if (libInfo.getLibRootUrls().isEmpty()) { return null; } else { return updatePackagesLibraryRoots(project, libInfo); } }