class_docstr: Write encoded protobuf to a file with packing defined in tensorflow.
code: def flush(self):
      self._writer.flush()
  
file_path: tensorboard/tensorboard/summary/writer/record_writer.py
imports: import struct
  from tensorboard.compat.tensorflow_stub.pywrap_tensorflow import masked_crc32c
label_desc: Use image node_id 3 for calling the RecordWriter obj's underlying member method code with example usage: obj.flush() without return types