container/src/main/java/com/streamsets/datacollector/cli/sch/SchAdmin.java
private static void updateTokenFile(Context context, String appAuthToken) throws IOException {
    File tokenFile = context.tokenFilePath == null ? new File(context.runtimeInfo.getConfigDir(), APP_TOKEN_FILE) : new File(context.tokenFilePath);
    DataStore dataStore = new DataStore(tokenFile);
    try (OutputStream os = dataStore.getOutputStream()) {
      IOUtils.write(appAuthToken, os);
      dataStore.commit(os);
    } finally {
      dataStore.release();
    }
  }
private static void updateTokenFile(Context context, String appAuthToken) throws IOException {
    File tokenFile = context.tokenFilePath == null ? new File(context.runtimeInfo.getConfigDir(), APP_TOKEN_FILE) : new File(context.tokenFilePath);
    DataStore dataStore = new DataStore(tokenFile);
    try (OutputStream os = dataStore.getOutputStream()) {
      IOUtils.write(appAuthToken, os);
      dataStore.commit(os);
    } finally {
      dataStore.release();
    }
  }
Update token file with the SDC access token.