Method begin

src/database/mock.rs:165–170

(&mut self)

    #[instrument(level = "trace")]
    fn begin(&mut self) {
        match self.transaction.as_mut() {
            Some(transaction) => transaction.begin_nested(self.db_backend),
            None => self.transaction = Some(OpenTransaction::init()),
        }
    }

    #[instrument(level = "trace")]
    fn commit(&mut self) {