Google.VersionHandler.UpdateVersionedAssets C# (CSharp) Method

    public static void UpdateVersionedAssets(bool forceUpdate = false) {
        // If this module is disabled do nothing.
        if (!forceUpdate && !Enabled) return;

        var metadataSet = FileMetadataSet.FindWithPendingUpdates(
            FileMetadataSet.ParseFromFilenames(FindAllAssets()));

        if (metadataSet.EnableMostRecentPlugins()) {
            AssetDatabase.Refresh();
        }

        var obsoleteFiles = new ObsoleteFiles(
            ManifestReferences.FindAndReadManifests(metadataSet), metadataSet);

        // Obsolete files that are no longer reference can be safely
        // deleted, prompt the user for confirmation if they have the option
        // enabled.
        bool deleteFiles = true;
        if (obsoleteFiles.unreferenced.Count > 0) {
            if (CleanUpPromptEnabled && deleteFiles) {
                deleteFiles = EditorUtility.DisplayDialog(
                    PLUGIN_NAME,
                    "Would you like to delete the following obsolete files " +
                    "in your project?\n\n" +
                    String.Join("\n", new List<string>(
                                        obsoleteFiles.unreferenced).ToArray()),
                    "Yes", cancel: "No");
            }
            foreach (var filename in obsoleteFiles.unreferenced) {
                if (deleteFiles) {
                    MoveAssetToTrash(filename);
                } else if (VerboseLoggingEnabled) {
                    UnityEngine.Debug.Log("Leaving obsolete file: " +
                                          filename);
                }
            }
        }

        // If any obsolete referenced files are present, prompt the user for
        // confirmation of deletion.
        if (obsoleteFiles.referenced.Count > 0) {
            List<string> referencesString = new List<string>();
            foreach (var item in obsoleteFiles.referenced) {
                List<string> lines = new List<string>();
                lines.Add(item.Key);
                foreach (var reference in item.Value) {
                    lines.Add("    " + reference);
                }
                referencesString.Add(String.Join("\n", lines.ToArray()));
            }
            deleteFiles = EditorUtility.DisplayDialog(
               PLUGIN_NAME,
               "The following obsolete files are referenced by packages in " +
               "your project, would you like to delete them?\n\n" +
               String.Join("\n", referencesString.ToArray()),
               "Yes", cancel: "No");

            foreach (var item in obsoleteFiles.referenced) {
                if (deleteFiles) {
                    MoveAssetToTrash(item.Key);
                } else if (VerboseLoggingEnabled) {
                    UnityEngine.Debug.Log(
                        "Leaving obsolete file: " + item.Key + " | " +
                        "Referenced by (" +
                        String.Join(", ", item.Value.ToArray())  + ")");
                }
            }
        }
    }