function output = subsref(obj, S)
%SUBSREF Handle the subreffing of PricklyPear objects
%   Not to be called directly

    output = obj;

    for ii = 1:numel(S)
        s = S(ii);
        
        switch s.type
            case '()'
                if numel(s.subs) > 0
                    output = obj.child(s.subs{1});
                end
            case '.'
                output = builtin('subsref', output, s);
        end
    end

end