code: def gather(self, in_array, out_array, root=0, stream=None):
      pass
  
file_path: cupy/cupyx/distributed/_comm.py
imports: import abc
  from cupyx.distributed import _store
label_desc: Use image node_id 11 for calling the _Backend obj's underlying member method code with example usage: obj.gather(in_array, out_array, root, stream) without return types