What is the Transformer module used for in PyTorch?

The Transformer module in PyTorch is used to implement the Transformer model, which is a deep learning model for natural language processing tasks. This model uses self-attention mechanism and positional encoding to encode and decode input sequences, making it suitable for tasks like machine translation, text generation, and text classification. The Transformer module provides various components of the Transformer model, including Transformer encoder, Transformer decoder, and the implementation of the entire Transformer model. By using these components, users can easily build and train Transformer models to solve a variety of natural language processing problems.