code: def LockedWrite(self, cache_data):
          
          if isinstance(cache_data, six.text_type):
              cache_data = cache_data.encode(encoding=self._encoding)
  
          with self._thread_lock:
              if not self._EnsureFileExists():
                  return False
              with self._process_lock_getter() as acquired_plock:
                  if not acquired_plock:
                      return False
                  with open(self._filename, 'wb') as f:
                      f.write(cache_data)
                  return True
docs: Acquire an interprocess lock and write a string.
  
          This method safely acquires the locks then writes a string
          to the cache file. If the string is written successfully
          the function will return True, if the write fails for any
          reason it will return False.
  
          Args:
            cache_data: string or bytes to write.
  
          Returns:
            bool: success