code: def ref_broadcast(x, shape):
      return x * np.ones(shape, dtype=x.dtype)
  
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 1 for calling a global function with example usage: ref_broadcast(x, shape) and returns: unknown