    @Test
    public void testHashTags() throws Exception {


        RevPerson tagger = new RevPersonImpl("volaya", "volaya@boundlessgeo.com", -1000, -1);
        RevPerson tagger2 = new RevPersonImpl("groldan", "groldan@boundlessgeo.com", 10000, 0);
        RevTag tag = new RevTagImpl(null, "tag1", ObjectId.forString("fake commit id"), "message",
                tagger);
        RevTag tag2 = new RevTagImpl(null, "tag2", ObjectId.forString("another fake commit id"),
                "another message", tagger2);
        ObjectId tagId = hashCommand.setObject(tag).call();
        ObjectId tagId2 = hashCommand.setObject(tag2).call();
        assertNotNull(tagId);
        assertNotNull(tagId2);
        assertNotSame(tagId, tagId2);

    }