docstr: Args:
      filepath (str): a string that contains the absolute path, including the file name, where
          the visualized image will be saved.
docstr_tok: ["Args",":","filepath","(","str",")",":","a","string","that","contains","the","absolute","path",",","including","the","file","name",",","where","the","visualized","image","will","be","saved","."]
code: def save(self, filepath):
      """
      Args:
          filepath (str): a string that contains the absolute path, including the file name, where
              the visualized image will be saved.
      """
      self.fig.savefig(filepath)
  
imports: import colorsys
  import logging
  import math
  import numpy
  from enum import Enum, unique
  import cv2
  import matplotlib
  import matplotlib.colors
  import matplotlib.figure
  import pycocotools.mask
  import torch
  from matplotlib.backends.backend_agg import FigureCanvasAgg
  from PIL import Image
  from detectron2.data import MetadataCatalog
  from detectron2.structures import BitMasks, Boxes, BoxMode, Keypoints, PolygonMasks, RotatedBoxes
  from detectron2.utils.file_io import PathManager
  from .colormap import random_color
label_desc: Use image node_id 4 for calling the VisImage obj's underlying member method code with example usage: obj.save(filepath) without return types