Obtaining operation name in LogGraph

[shashikdm]

When building a graph (#32), it is very important to obtain the name of the function that was executed to obtain each Tracked variable.
e.g.

x = param(rand(2,2))
y = param(rand(2,2))
z = x*y

I want to find the symbol * from z alone.

[shashikdm]

So far I have tried the following, but these are not consistent.
z.tracker.f.func.f
methods(z.tracker.f.func).ms[1].name
methods(z.tracker.f.func).ms[1].roots[4]
methods(z.tracker.f.func).mt.name
This may work for some operation but for other operations, I end up getting :back or Symbol(#<somenumber>))
I'm absolutely stuck here