pub trait ResourceManager: Send + Sync {
// Required methods
fn redo(&self, frame: &WalFrame, ctx: &RedoContext) -> QuillSQLResult<usize>;
fn undo(&self, frame: &WalFrame, ctx: &UndoContext) -> QuillSQLResult<()>;
// Provided method
fn transaction_id(&self, _frame: &WalFrame) -> Option<u64> { ... }
}