code: def anchors_plane(feat_h, feat_w, stride, base_anchor):
      return anchors_cython(feat_h, feat_w, stride, base_anchor)
  
file_path: insightface/detection/retinaface_anticov/rcnn/processing/generate_anchor.py
imports: from __future__ import print_function
  import sys
  from builtins import range
  import numpy
  from ..cython.anchors import anchors_cython
label_desc: Use image node_id 1 for calling a global function with example usage: anchors_plane(feat_h, feat_w, stride, base_anchor) and returns: anchors_cython