fn batch_params(
        &self,
        l1_batch_number: L1BatchNumber,
        timestamp: u64,
    ) -> (L1BatchEnv, SystemEnv, PubdataParams) {
        let mut system_params = default_system_env();
        if let Some(vm_gas_limit) = self.config.vm_gas_limit {
            system_params.bootloader_gas_limit = vm_gas_limit;
        }
        system_params.default_validation_computational_gas_limit =
            self.config.validation_computational_gas_limit;
        let mut batch_params = default_l1_batch_env(l1_batch_number.0, timestamp, self.fee_account);
        batch_params.previous_batch_hash = Some(H256::zero()); // Not important in this context.
        (batch_params, system_params, PubdataParams::default())
    }
Creates test batch params that can be fed into the VM.
core/node/state_keeper/src/executor/tests/tester.rs