modify classic_mod.tplx to adjust images properly

[jonsedar]

nbconvert 5.6.1

Regular latex template has images too large:

\adjustimage{max size={0.9\linewidth}{0.9\paperheight}}{((( filename )))}

I want to override using classic_mod.tplx, something like

((*- block figure -*))
    ((( super() )))
    %\renewcommand{\adjustimage}{max size={0.5\linewidth}{0.5\paperheight}}{((( filename )))}
((*- endblock figure -*))

but nothing I try works. Instead have manually hacked

/Users/jon/opt/anaconda3/envs/freberg_trk/lib/python3.8/site-packages/nbconvert/templates/latex/document_contents.tplx

with line:

\adjustimage{max size={0.9\linewidth}{0.3\paperheight}}{((( filename )))}

which is poor form!