public static Builder newBuilder(
            im.turms.client.model.proto.model.conversation.PrivateConversation prototype) {
        return DEFAULT_INSTANCE.createBuilder(prototype);
    }
<code>repeated .im.turms.proto.Value custom_attributes = 15;</code>
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/conversation/PrivateConversation.java