public static MeterInstruction meterTraffic(final MeterId meterId) {
        checkNotNull(meterId, "meter id cannot be null");
        return new MeterInstruction(meterId);
    }
@Test
    public void testMeterTrafficMethod() {
        final Instruction instruction = Instructions.meterTraffic(meterId1);
        final Instructions.MeterInstruction meterInstruction =
                checkAndConvert(instruction,
                                Instruction.Type.METER,
                                Instructions.MeterInstruction.class);
        assertThat(meterInstruction.meterId(), is(meterId1));
    }