code: def get_writer_flow(self):
      return self._writer_flow
  
file_path: hls4ml/hls4ml/backends/vivado_accelerator/vivado_accelerator_backend.py
imports: import os
  from hls4ml.backends import VivadoBackend
  from hls4ml.model.flow import register_flow
  from hls4ml.report import parse_vivado_report
label_desc: Use image node_id 6 for calling the VivadoAcceleratorBackend obj's underlying member method code with example usage: obj.get_writer_flow() and returns: self