public static UnicastMappingInstruction unicastPriority(int priority) {
        return new UnicastMappingInstruction.PriorityMappingInstruction(
                                            UnicastType.PRIORITY, priority);
    }
@Test
    public void testUnicastPriorityMethod() {
        final MappingInstruction instruction = MappingInstructions.unicastPriority(2);
        final UnicastMappingInstruction.PriorityMappingInstruction priorityMappingInstruction =
                checkAndConvert(instruction,
                                UnicastMappingInstruction.Type.UNICAST,
                                UnicastMappingInstruction.PriorityMappingInstruction.class);
        assertThat(priorityMappingInstruction.priority(), is(equalTo(2)));
    }