code: def graph_launch(self, *args, wait=False):
      return cu_time_execution(
          lambda: check(cuda.cuGraphLaunch(*args)), enable=wait
      )
  
imports: import ctypes
  from typing import Any, Optional, Tuple, Dict, List, cast
  import gpuctypes.cuda
  from tinygrad.helpers import init_c_var, encode_args_cuda_style, all_same
  from tinygrad.device import CompiledASTRunner, update_stats, Buffer
  from tinygrad.runtime.ops_cuda import check, cu_time_execution
  from tinygrad.shape.symbolic import Variable
  from tinygrad.jit import JitItem, get_input_replace, get_jit_stats, get_jc_idxs_with_updatable_launch_dims, get_jc_idxs_with_updatable_var_vals, GraphException
label_desc: Use image node_id 9 for calling the CUDAGraph obj's underlying member method code with example usage: obj.graph_launch() and returns: cu_time_execution