code: def _broadcast(self, xp, dtype, shapes):
      arrays = [testing.shaped_arange(s, xp, dtype) for s in shapes]
      return xp.broadcast(*arrays)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy.cuda import runtime
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestBroadcast obj's underlying member method code with example usage: obj._broadcast(xp, dtype, shapes) and returns: xp