class_docstr: Base class for all cooperative groups. 
class_docstr_tok: ["Base","class","for","all","cooperative","groups","."]
code: def __init__(self):
      raise NotImplementedError
  
imports: from cupy.cuda import runtime
  from cupyx.jit import _compile
  from cupyx.jit import _cuda_types
  from cupyx.jit._internal_types import BuiltinFunc
  from cupyx.jit._internal_types import Constant
  from cupyx.jit._internal_types import Data
  from cupyx.jit._internal_types import wraps_class_method
label_desc: Use image node_id 1 to create a new _ThreadGroup object from inherited base classes: _cuda_types with example: obj = _ThreadGroup()