private PolicerId(URI u) {
        super(u.toString());
        uri = u;
    }
@Test
    public void testEquality() {
        // Create URI representing the id one
        URI uriOne = URI.create(OF_SCHEME + ":" + Integer.toHexString(ONE));
        // Create String representing the id one
        String stringOne = OF_SCHEME + ":" + Integer.toHexString(ONE);
        // Create String representing the id two
        String stringTwo = OF_SCHEME + ":" + Integer.toHexString(TWO);
        // Create String representing the id A
        String stringA = FOO_SCHEME + ":" + A;
        // Create String representing the id LA
        String stringLA = FOO_SCHEME + ":" + LA;
        // Create policer id one
        PolicerId one = PolicerId.policerId(uriOne);
        // Create policer id one
        PolicerId copyOfOne = PolicerId.policerId(stringOne);
        // Verify equality
        assertEquals(one, copyOfOne);
        // Create a different policer id
        PolicerId two = PolicerId.policerId(stringTwo);
        // Verify not equals
        assertNotEquals(two, one);
        assertNotEquals(two, copyOfOne);
        // Create policer id A
        PolicerId a = PolicerId.policerId(A);
        // Create policer id LA
        PolicerId la = PolicerId.policerId(LA);
        // Verify not equals
        assertNotEquals(a, la);
    }