Use batch within custom class A on a non-static method of custom class B

I want to execute a non-static method of a custom class non-blocking/asynchronously from another class. Those 2 object are linked by their common parent object. The way I tried so far looks something like this:

classdef ClassA < handle
    function non_blocking(self, varargin)
        ...
        batch(@self.parent.ClassB.do_stuff, 0, {arg1_value,0,0,0,'arg2', arg2_value});
        ...
    end
end

resulting in

Warning: Unable to calculate the dependencies of the files:
  self.parent.ClassB.do_stuff

because:
File, function or class "self.parent.ClassB.do_stuff" may not exist. Neither WHICH nor EXIST could find an exact, case-sensitive match. Please check the spelling
of the name, and that any required directories are on the MATLAB path.

Any ideas or workarounds to fix this?

[Raymond Norris]

You might not need to resolve this warning. MATLAB isn't systematically going through do_stuff for additional functions to add to the job, but perhaps these files already exist on the worker's path.

Does the job run?

[Andre Butzerin]

I maybe forgot to mention that self.parent is a App Designer app object..

But yes, it works now by using:

classB_obj = self.parent.ClassB;
batch(@classB_obj.do_stuff, 0, {arg1_value,0,0,0,'arg2', arg2_value});