private JsonObject toJson(EncryptedKeyset keyset) {
    JsonObject json = new JsonObject();
    json.addProperty("encryptedKeyset", Base64.encode(keyset.getEncryptedKeyset().toByteArray()));
    json.add("keysetInfo", toJson(keyset.getKeysetInfo()));
    return json;
  }
Static method to create a JsonKeysetWriter that writes to a file path.

<p>This method only works on Android API level 26 or newer.

@deprecated Method should be inlined.
java_src/src/main/java/com/google/crypto/tink/JsonKeysetWriter.java