public static final KeyTemplate ed25519Template() {
    return exceptionIsBug(
        () -> KeyTemplate.createFrom(Ed25519Parameters.create(Ed25519Parameters.Variant.TINK)));
  }
@return A {@link KeyTemplate} that generates new instances of ED25519 keys.
java_src/src/main/java/com/google/crypto/tink/signature/Ed25519PrivateKeyManager.java