my $store = Wiki::Toolkit::Store::SQLite->new( dbname => "wiki" );
The dbname parameter is mandatory.
$store->check_and_write_node( node => $node, checksum => $checksum, %other_args );
Locks the node, verifies the checksum, calls "write_node_post_locking" with all supplied arguments, unlocks the node. Returns the version of the updated node on successful writing, 0 if checksum doesn't match, -1 if the change was not applied, croaks on error.