code: def save_radar_image(self, radar_data):
      t_start = self.timer.time()
      points = np.frombuffer(radar_data.raw_data, dtype=np.dtype("f4"))
      points = np.reshape(points, (len(radar_data), 4))
  
      t_end = self.timer.time()
      self.time_processing += t_end - t_start
      self.tics_processing += 1
  
imports: import glob
  import os
  import sys
  import carla
  import argparse
  import random
  import time
  import numpy
label_desc: Use image node_id 7 for calling the SensorManager obj's underlying member method code with example usage: obj.save_radar_image(radar_data) without return types