class_docstr: Variant of `.TransformBbox` which calls *callback* before returning points.
  
  Used by `.mark_inset` to unstale the parent axes' viewlim as needed.
class_docstr_tok: ["Variant","of","`",".TransformBbox","`","which","calls","*","callback","*","before","returning","points",".","Used","by","`",".mark_inset","`","to","unstale","the","parent","axes","'","viewlim","as","needed","."]
code: def get_points(self):
      self._callback()
      return super().get_points()
  
imports: from matplotlib import _api, _docstring
  from matplotlib.offsetbox import AnchoredOffsetbox
  from matplotlib.patches import Patch, Rectangle
  from matplotlib.path import Path
  from matplotlib.transforms import Bbox, BboxTransformTo
  from matplotlib.transforms import IdentityTransform, TransformedBbox
  from .None import axes_size
  from .parasite_axes import HostAxes
label_desc: Use image node_id 2 for calling the _TransformedBboxWithCallback obj's underlying member method code with example usage: obj.get_points() and returns: super