code: def __delitem__(self, key):
      self.size -= get_size(self.cache[key])
      self.size -= sys.getsizeof(key)
      del self.cache[key]
  
file_path: espnet/espnet2/utils/sized_dict.py
imports: import collections
  import sys
  from torch import multiprocessing
label_desc: Use image node_id 4 for calling the SizedDict obj's underlying member method code with example usage: obj.__delitem__(key) without return types