code: def train_op(x1, y1, x2, y2):
      g, v = maml_gv(x1, y1, x2, y2)
      opt(0.001, g)
      return v
  
file_path: objax/examples/maml/maml.py
imports: import jax.numpy
  import matplotlib.pyplot
  import numpy
  from tqdm import trange
  import objax
label_desc: Use image node_id 8 for calling a global function with example usage: train_op(x1, y1, x2, y2) and returns: v