@Override
  public void run() throws Exception {
    System.out.println("The following key templates are supported:");
    List<String> keyTemplates = new ArrayList<>();
    keyTemplates.addAll(Registry.keyTemplates());
    keyTemplates.addAll(TinkeyKeyTemplates.get().keySet());
    Collections.sort(keyTemplates);
    for (String name : keyTemplates) {
      System.out.println(name);
    }
  }
Creates a new {@link com.google.crypto.tink.proto.KeyTemplate}.
tools/tinkey/src/main/java/com/google/crypto/tink/tinkey/ListKeyTemplatesCommand.java