code: def time_long_backward_pass():
      if MASTER_BRANCH:
          backward_pass(1.0, long_end_node, long_start_node)
      else:
          backward_pass(1.0, long_end_node)
  
imports: import numpy
  import autograd.numpy
  from autograd import grad
label_desc: Use image node_id 9 for calling a global function with example usage: time_long_backward_pass() without return types