class PersistentSHA256Checksums implements PersistentStateComponent<PersistentSHA256Checksums> {

  public void storeChecksum(@NotNull String distribution, @NotNull String checksum) {
    if (myStoredChecksums == null) {
      myStoredChecksums = new HashMap<>();
    }
    myStoredChecksums.put(distribution, checksum);
  }

}