code: def synchronize(**kw):
      """Dummy."""
      device_synchronize("")
  
imports: import nnabla
  from nnabla._init import clear_memory_cache, array_classes, device_synchronize, get_device_count, get_devices
  from nnabla._version import __version__, __author__, __email__
label_desc: Use image node_id 2 for calling a global function with example usage: synchronize() without return types