code: def write_data(self, output):
      for sequence in self.sequences:
          output.write(struct.pack("<I", len(sequence)))
          for sample in sequence:
              self.write_floats(output, sample)
  
imports: import sys
  import argparse
  import struct
  import os
  from collections import OrderedDict
label_desc: Use image node_id 3 for calling the DenseConverter obj's underlying member method code with example usage: obj.write_data(output) without return types