code: def train(self, sample):
      self.input_q.put(("train", sample))
      return self.output_q.get()
  
file_path: mesh-transformer-jax/mesh_transformer/train_actor.py
imports: import ray
  import time
  import numpy
  from queue import Queue
  from mesh_transformer.util import head_print
label_desc: Use image node_id 4 for calling the NetworkRunner obj's underlying member method code with example usage: obj.train(sample) and returns: self