classdef clA
  properties (Access = private)
    prop = 'valA';
  end
  methods (Access = private)
    function privMeth (this)
      disp ('clA::privMeth');
    end
  end
  methods
    function y = getProp (this, other)
      if nargin > 1
        disp ('getProp: using "other"');
        y = other.prop;
      else
        y = this.prop;
      end
    end
    function callPrivMeth (this, other)
      if nargin > 1
        disp ('callPrivMeth: using "other"');
        other.privMeth ();
      else
        this.privMeth ();
      end
    end
  end
end