Bug report

can'r make sense of deprecation warning

Code for reproduction

ax=gca()
ax.figbox

Actual outcome

MatplotlibDeprecationWarning: 
The figbox attribute was deprecated in Matplotlib 3.4 and will be removed two minor releases later. Use get_subplotspec().get_position(self.figure) instead.

Expected outcome

A useful suggestion. I could not make sense from the deprecation or the documentation on how this was supposed to be replaced. I have no idea what object self.figure refers to, or even in what module get_subplotspec lives.

Matplotlib version

• Operating system: Fedora 33
• Matplotlib version (import matplotlib; print(matplotlib.__version__)): 3.4.1
• Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg
• Python version: 3.9.4
• Jupyter version (if applicable): IPython 7.22.0
• Other libraries:

pip