code: def merge_states(x):
      """Smash the last two dimensions of x into a single dimension."""
      *start, a, b = x.shape
      return np.reshape(x, start + [a * b])
  
imports: import json
  import os
  import sys
  import jax.numpy
  import numpy
  import objax
  from objax.variable import TrainVar
label_desc: Use image node_id 4 for calling a global function with example usage: merge_states(x) and returns: np