import tensorflow as tf

         masks,
         scores,
         classes,
         min_score_thresh=0.65,
         min_iou_thresh=0.5,
         is_class_agnostic=True)
    nms_masks_expected1 = tf.stack([mask0, mask4])
    nms_scores_expected1 = tf.constant([1.0, 0.85], dtype=tf.float32)
    nms_classes_expected1 = tf.constant([1, 2], dtype=tf.int32)
    (nms_masks2,
     nms_scores2,
     nms_classes2,
