code: def __init__(self, num_classes=1, for_mot=True):
      super(JDEDetectionLoss, self).__init__()
      self.num_classes = num_classes
      self.for_mot = for_mot
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from ppdet.core.workspace import register
label_desc: Use image node_id 1 to create a new JDEDetectionLoss object from inherited base classes: nn with example: obj = JDEDetectionLoss(num_classes, for_mot)