code: def name(self) -> str:
      return "NorFairTracker"
  
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 1 for calling the NorFairTracker obj's underlying member method code with example usage: obj.name() and returns: str