code: def cuda_Group_size(context, builder, sig, args):
      grp = cgutils.create_struct_proxy(sig.args[0])(
          context, builder, value=args[0]
      )
      return grp.size
  
file_path: cudf/python/cudf/cudf/core/udf/groupby_lowering.py
imports: from functools import partial
  from numba import types
  from numba.core import cgutils
  from numba.core.extending import lower_builtin
  from numba.core.typing import signature
  from numba.cuda.cudaimpl import lower
  from cudf.core.udf.groupby_typing import SUPPORTED_GROUPBY_NUMBA_TYPES, Group, GroupType, call_cuda_functions, group_size_type, index_default_type
label_desc: Use image node_id 5 for calling a global function with example usage: cuda_Group_size(context, builder, sig, args) and returns: grp