src/vs/workbench/contrib/codeEditor/browser/editorSettingsMigration.ts/EditorSettingsMigration/_migrateEditorSettings
class EditorSettingsMigration:	private async _migrateEditorSettings(): Promise<void> {
		await this._migrateEditorSettingsForFolder(undefined);
		for (const folder of this._workspaceService.getWorkspace().folders) {
			await this._migrateEditorSettingsForFolder(folder);
		}
	}