code: def time_fan_out_fan_in_backward_pass():
      if MASTER_BRANCH:
          backward_pass(1.0, fan_end_node, fan_start_node)
      else:
          backward_pass(1.0, fan_end_node)
  
imports: import numpy
  import autograd.numpy
  from autograd import grad
label_desc: Use image node_id 14 for calling a global function with example usage: time_fan_out_fan_in_backward_pass() without return types