src/transformers/models/codegen/modeling_codegen.py/CodeGenBlock/__init__
class CodeGenBlock:    def __init__(self, config):
        super().__init__()
        inner_dim = config.n_inner if config.n_inner is not None else 4 * config.n_embd
        self.ln_1 = nn.LayerNorm(config.n_embd, eps=config.layer_norm_epsilon)
        self.attn = CodeGenAttention(config)
        self.mlp = CodeGenMLP(inner_dim, config)