def find_portgroup(self, si, dv_switch_path, name):
        """
        Returns the portgroup on the dvSwitch
        :param name: str
        :param dv_switch_path: str
        :param si: service instance
        """
        dv_switch = self.get_folder(si, dv_switch_path)
        if dv_switch and dv_switch.portgroup:
            for port in dv_switch.portgroup:
                if port.name == name:
                    return port
        return None