code: def setup(
      self, distance_threshold=DISTANCE_THRESHOLD_CENTROID
  ) -> None:
      # https://github.com/tryolabs/norfair/blob/74b11edde83941dd6e32bcccd5fa849e16bf8564/norfair/tracker.py#L18
      try_to_import_norfair()
      from norfair import Tracker
  
      self.tracker = Tracker(
          distance_function="euclidean",
          distance_threshold=distance_threshold,
      )
      self.prev_frame_id = None
  
file_path: evadb/evadb/functions/trackers/nor_fair.py
imports: import numpy
  from evadb.functions.abstract.tracker_abstract_function import EvaDBTrackerAbstractFunction
  from evadb.utils.generic_utils import try_to_import_norfair
  from evadb.utils.math_utils import get_centroid
label_desc: Use image node_id 2 for calling the NorFairTracker obj's underlying member method code with example usage: obj.setup(distance_threshold) without return types