code: def kernel_launch(
      self,
      stream: StreamId,
      read_only: List[DataPtr] = None,
      read_write: List[DataPtr] = None,
  ) -> List[csan.SynchronizationError]:
      if read_only is None:
          read_only = []
      if read_write is None:
          read_write = []
      return self.handler._handle_kernel_launch(
          stream,
          read_only,
          read_write,
          {},
          "",
          {k: [""] for k in read_only + read_write},
      )
  
imports: import sys
  import textwrap
  import traceback
  from typing import List
  import torch
  import torch.cuda._sanitizer
  from torch.cuda._sanitizer import StreamId, DataPtr, EventId
  from torch.testing._internal.common_utils import TestCase, run_tests, NoTest, TEST_CUDA
label_desc: Use image node_id 2 for calling the TestEventHandler obj's underlying member method code with example usage: obj.kernel_launch(stream, read_only, read_write) and returns: self