code: def ff(self, x):
      dense_proj = self.dense_proj(x)
      dense_proj = jax.nn.gelu(dense_proj)
      return self.dense_proj_o(dense_proj)
  
imports: import haiku
  import jax
  import jax.numpy
  import numpy
  from einops import rearrange, repeat
  from mesh_transformer.util import f_psum, g_psum, maybe_shard, head_print
  from jax.experimental import PartitionSpec
  from jax.experimental.maps import thread_resources
label_desc: Use image node_id 3 for calling the TransformerLayerShard obj's underlying member method code with example usage: obj.ff(x) and returns: self