code: def running_mean_and_variance_get_variance(state):
      (_, var_state) = state
      return running_mean_get_mean(var_state)
  
file_path: trax/trax/rl/normalization.py
imports: import gin
  import numpy
  from trax import fastmath
  from trax import layers
label_desc: Use image node_id 9 for calling a global function with example usage: running_mean_and_variance_get_variance(state) and returns: running_mean_get_mean