How to set, list, get breakpoints in classdef in octave?

Question

Suppose I have a classdef in a MyClass.m file with properties and methods like in the polynomial2 example found here https://octave.org/doc/v7.1.0/Creating-a-classdef-Class.html

I've confirmed that it's possible to set breakpoints in class methods using

dbstop in MyClass at MyClassMethod

as described here https://octave.org/doc/v7.1.0/Breakpoints.html

My questions are:

Is it possible to use a line number instead of the method name?

Is is possible to list the breakpoints in the class file?

Is it possible to clear breakpoints only in that class file?

Since all of the above are possible for functions, I would suppose it should also be possible for classes.

Thank you