LocalReadOnlyProxyTransaction extends LocalProxyTransaction { @Override boolean isSnapshotOnly() { return true; } LocalReadOnlyProxyTransaction(final ProxyHistory parent, final TransactionIdentifier identifier,
        final DataTreeSnapshot snapshot);   LocalReadOnlyProxyTransaction(final ProxyHistory parent, final TransactionIdentifier identifier);   }
@Test public void testIsSnapshotOnly() { Assert.assertTrue(transaction.isSnapshotOnly()); }