You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: standalone_miner.rs
    path of file: ./repos/CYFS/src/meta/cyfs-meta/src/chain/standalone
    
    the code of the file until where you have to start completion: use crate::{Chain};
use std::ops::{Deref, DerefMut};
use std::path::Path;
use crate::state_storage::StorageRef;
use cyfs_base::*;
use crate::chain::{Miner, BaseMiner, MinerRuner};
use std::thread;
use std::time::Duration;
use log::*;
use async_trait::async_trait;
use std::sync::Arc;
use cyfs_base_meta::MetaTx;
use crate::stat::{Stat, StatConfig};

pub struct StandaloneMiner {
    base: BaseMiner,
}

#[async_trait]
impl Miner for StandaloneMiner {
    fn as_chain(&self) -> &Chain {
        self.base.as_chain()
    }

    async fn push_tx(&self, tx: MetaTx) -> BuckyResult<()> {
        self.base.push_tx(tx).await
    }

    async fn get_nonce(&self, account: &ObjectId) -> BuckyResult<i64> {
        self.base.get_nonce(account).await
    }

    fn get_interval(&self) -> u64 {
        self.base.interval() as u64
    }
}

impl MinerRuner for StandaloneMiner {
    fn run(self: &Arc<Self>) -> BuckyResult<()> {
        let miner = self.clone();
        thread
    
    fn test() {
        async_std::task::block_on(async {
            let config = GenesisConfig {
                chain_type: Some("".to_string()),
                coinbase: Default::default(),
                interval: 0,
                bfc_spv_node: "".to_string(),
                coins: vec![],
                price: GenesisPriceConfig {},
                miner_key_path: None,
                mg_path: None,
                miner_desc_path: None,
                sub_chain_tx: None
            };

            let mut temp_dir = std::env::temp_dir();
            temp_dir.push("rust_test");
            if temp_dir.exists() {
                remove_dir_all(temp_dir.clone()).unwrap();
            }
            create_dir(temp_dir.clone()).unwrap();

            let header = BlockDesc::new(BlockDescContent::new(ObjectId::default(), None)).build();
            let mut block_body = BlockBody::new();
            let mut genesis_storage = temp_dir.clone();
            genesis_storage.push("genesis");
            let storage = new_sql_storage(genesis_storage.as_path());
            let state = storage.create_state(false).await;
            state.init_genesis(&config.coins).await.unwrap();
            let meta_config = Config::new(&state).unwrap();
            state.create_cycle_event_table(meta_config.get_rent_cycle()).await.unwrap();

            let _btc_mint = BTCMint::new(&state, &meta_config, config.bfc_spv_node.as_str());
            // if let Ok(coinage_tx) = btc_mint.create_btc_genesis_tx() {
            //     let tx = MetaTx::new(1, TxCaller::Miner(ObjectId::default()), 0, 0, 0
            //                      , None, TxBody::BTCCoinageRecord(coinage_tx), Vec::new()).build();
            //     block.add_transaction(tx).unwrap();
            // }

            new_archive_storage(Path::new(""), false).create_archive(false);
            BlockExecutor::execute_block(&header, &mut block_body, &state, new_archive_storage(Path::new(""), false).create_archive(false).await, &meta_config, None, "".to_string(), None, ObjectId::default()).await.unwrap();
            let _block = Block::new(ObjectId::default(), None, HashValue::default(), block_body).unwrap().build();
            // let chain = Chain::new(temp_dir.as_path(), new_sql_storage, block, &storage).await.unwrap();
            // let ret = StandaloneMiner::new(ObjectId::default(),  0, chain, "".to_string());
            //
            // let chain = ret.unwrap().as_chain();
        });
    }