code: def placeholder_item(self):
      return {
          "context": "nada",
          "top_p": 0.9,
          "top_k": 40,
          "temp": 1.0,
          "length": 1,
      }
  
imports: import os
  import time
  import jax
  import optax
  import threading
  import numpy
  import logging
  from queue import Queue, Empty
  from jax.experimental import maps
  from transformers import GPT2TokenizerFast
  from mesh_transformer.checkpoint import read_ckpt
  from mesh_transformer.sampling import nucleaus_sample
  from mesh_transformer.transformer_shard import CausalTransformer
label_desc: Use image node_id 10 for calling the GPTJ obj's underlying member method code with example usage: obj.placeholder_item() and returns: dict