{
CacheSPI spi = (CacheSPI) cache;
TransactionManager tm = spi.getTransactionManager();
assert spi.peek(Fqn.fromString("/a/b/c"), true, true) == null;
tm.begin();
assert !spi.removeNode("/a/b/c");
tm.commit();
assert spi.peek(Fqn.fromString("/a/b/c"), true, true) == null;
assert spi.peek(Fqn.fromString("/a/b"), true, true) == null;
assert spi.peek(Fqn.fromString("/a"), true, true) == null;
}