code: def top_k(*args, **kwargs):
      """Top k."""
      return backend()["top_k"](*args, **kwargs)
  
imports: import contextlib
  import enum
  import gin
  from trax.fastmath.jax import JAX_BACKEND
  from trax.fastmath.numpy import NUMPY_BACKEND
  from trax.fastmath.tf import TF_BACKEND
label_desc: Use image node_id 9 for calling a global function with example usage: top_k() and returns: backend