This repository is a Java/Kotlin client library for the Telegram Bot API, providing type-safe wrappers for all bot API methods and models. The architecture is a classic library with a fluent builder pattern: users create request objects (e.g., `SendMessage`, `GetUpdates`), execute them via the `TelegramBot` class, and receive typed responses. The library handles both synchronous and asynchronous execution, supports long-polling and webhook modes, and includes Telegram Passport encryption/decryption utilities. The codebase is well-structured, with clear separation into model, request, response, and utility packages. It features custom Gson adapters for polymorphic API types (e.g., reaction types, chat boost sources) that demonstrate a clean discriminated union deserialization pattern. The library is actively maintained, tracking Telegram Bot API updates closely, and includes Kotlin extension functions for idiomatic usage. It is not a data research project; it is purely an integration library.