tablestore/src/main/java/com/alicloud/openservices/tablestore/AsyncTimeseriesClient.java [100:126]:
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        Preconditions.checkNotNull(internalClient);
        this.internalClient = internalClient;
        if (this.internalClient.getTimeseriesMetaCache() != null) {
            this.timeseriesMetaCache = this.internalClient.getTimeseriesMetaCache();
            return;
        }
        ClientConfiguration config = this.internalClient.getClientConfig();
        if (config.getTimeseriesConfiguration() == null) {
            config.setTimeseriesConfiguration(new TimeseriesConfiguration());
        }
        this.timeseriesMetaCache = CacheBuilder.newBuilder()
                .maximumWeight(config.getTimeseriesConfiguration().getMetaCacheMaxDataSize())
                .expireAfterAccess(config.getTimeseriesConfiguration().getMetaCacheExpireTimeAfterAccessInSec(), TimeUnit.SECONDS)
                .weigher(new Weigher<String, Long>() {
                    @Override
                    public int weigh(String key, Long value) {
                        return key.length() + 48 + 16; // add some overhead
                    }
                }).build();
        this.internalClient.setTimeseriesMetaCache(timeseriesMetaCache);
    }

    public void setExtraHeaders(Map<String, String> extraHeaders) {
        this.internalClient.setExtraHeaders(extraHeaders);
    }

    @Override
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tablestore/src/main/java/com/alicloud/openservices/tablestore/TimeseriesClient.java [98:124]:
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        Preconditions.checkNotNull(internalClient);
        this.internalClient = internalClient;
        if (this.internalClient.getTimeseriesMetaCache() != null) {
            this.timeseriesMetaCache = this.internalClient.getTimeseriesMetaCache();
            return;
        }
        ClientConfiguration config = this.internalClient.getClientConfig();
        if (config.getTimeseriesConfiguration() == null) {
            config.setTimeseriesConfiguration(new TimeseriesConfiguration());
        }
        this.timeseriesMetaCache = CacheBuilder.newBuilder()
                .maximumWeight(config.getTimeseriesConfiguration().getMetaCacheMaxDataSize())
                .expireAfterAccess(config.getTimeseriesConfiguration().getMetaCacheExpireTimeAfterAccessInSec(), TimeUnit.SECONDS)
                .weigher(new Weigher<String, Long>() {
                    @Override
                    public int weigh(String key, Long value) {
                        return key.length() + 48 + 16; // add some overhead
                    }
                }).build();
        this.internalClient.setTimeseriesMetaCache(timeseriesMetaCache);
    }

    public void setExtraHeaders(Map<String, String> extraHeaders) {
        this.internalClient.setExtraHeaders(extraHeaders);
    }

    @Override
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