code: def get_combinations(*N):
      ret = []
      for n in N:
          ret.extend(get_combination(n))
      return ret
  
file_path: nnabla/python/test/function/test_broadcast.py
imports: import pytest
  import numpy
  import nnabla.functions
  from nbla_test_utils import function_tester, list_ctx_and_func_name
label_desc: Use image node_id 3 for calling a global function with example usage: get_combinations() and returns: ret