code: def synchronize(self):
      check(hip.hipSetDevice(self.device))
      check(hip.hipDeviceSynchronize())
      for opaque in self.pending_copyin:
          check(hip.hipFree(opaque))
      self.pending_copyin.clear()
  
imports: from __future__ import annotations
  import ctypes, functools, subprocess, io
  from typing import Tuple, TypeVar, List
  import gpuctypes.hip
  from tinygrad.helpers import DEBUG, getenv, init_c_var, compile_cuda_style, encode_args_cuda_style, time_execution_cuda_style
  from tinygrad.helpers import from_mv, round_up, to_mv
  from tinygrad.device import Compiled, LRUAllocator, MallocAllocator
  from tinygrad.renderer.cstyle import HIPRenderer
  from tinygrad.codegen.kernel import LinearizerOptions
label_desc: Use image node_id 2 for calling the HIPDevice obj's underlying member method code with example usage: obj.synchronize() without return types