src/transformers/models/opt/modeling_flax_opt.py/FlaxOPTForCausalLMModule/setup
class FlaxOPTForCausalLMModule:    def setup(self):
        self.model = FlaxOPTModule(config=self.config, dtype=self.dtype)
        self.lm_head = nn.Dense(
            self.config.vocab_size,
            use_bias=False,
            dtype=self.dtype,
            kernel_init=jax.nn.initializers.normal(self.config.init_std),
        )