class_docstr: Compute anchors in the standard ways described in
  "Faster R-CNN: Towards Real-Time Object Detection with Region Proposal Networks".
docstr: Alias of `num_anchors`.
docstr_tok: ["Alias","of","`","num_anchors","`","."]
code: def num_cell_anchors(self):
      """
      Alias of `num_anchors`.
      """
      return self.num_anchors
  
imports: import collections
  import math
  from typing import List
  import torch
  from torch import nn
  from detectron2.config import configurable
  from detectron2.layers import ShapeSpec, move_device_like
  from detectron2.structures import Boxes, RotatedBoxes
  from detectron2.utils.registry import Registry
label_desc: Use image node_id 4 for calling the DefaultAnchorGenerator obj's underlying member method code with example usage: obj.num_cell_anchors() and returns: self