private Keyset keysetFromJson(JsonObject json) throws IOException {
    validateKeyset(json);
    Keyset.Builder builder = Keyset.newBuilder();
    if (json.has("primaryKeyId")) {
      builder.setPrimaryKeyId(getKeyId(json.get("primaryKeyId")));
    }
    JsonArray keys = json.getAsJsonArray("key");
    for (int i = 0; i < keys.size(); i++) {
      builder.addKey(keyFromJson(keys.get(i).getAsJsonObject()));
    }
    return builder.build();
  }
Static method to create a JsonKeysetReader from a {@link Path}.

<p>Note: the file path won't be read until {@link JsonKeysetReader#read} or {@link
JsonKeysetReader#readEncrypted} is called.

<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/JsonKeysetReader.java