def find_slave_widgets(self,tab):
        """return all the frontends that do not own the kernel attached to the given widget/tab.

            Only find frontends owned by the current application. Selection
            based on connection file of the kernel.

            This function does the conversion tabNumber/widget if needed.
        """
        #convert from/to int/richIpythonWidget if needed
        if isinstance(tab, int):
            tab = self.tab_widget.widget(tab)
        km=tab.kernel_client

        #build list of all widgets
        widget_list = [self.tab_widget.widget(i) for i in range(self.tab_widget.count())]

        # widget that are candidate not to be the owner of the kernel does have all the same port of the curent widget
        filtered_widget_list = ( widget for widget in widget_list if
                                widget.kernel_client.connection_file == km.connection_file)
        # Get a list of all widget owning the same kernel and removed it from
        # the previous cadidate. (better using sets ?)
        master_widget_list = self.find_master_tab(tab, as_list=True)
        slave_list = [widget for widget in filtered_widget_list if widget not in master_widget_list]

        return slave_list
return all the frontends that do not own the kernel attached to the given widget/tab.

            Only find frontends owned by the current application. Selection
            based on connection file of the kernel.

            This function does the conversion tabNumber/widget if needed.
        
angrmanagement/vendor/qtconsole/mainwindow.py