service-registry/registry-etcd/src/main/java/org/apache/servicecomb/registry/etcd/EtcdDiscovery.java [133:141]:
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  private List<KeyValue> getValuesByPrefix(String prefix) {

    CompletableFuture<GetResponse> getFuture = client.getKVClient()
        .get(ByteSequence.from(prefix, StandardCharsets.UTF_8),
            GetOption.builder().withPrefix(ByteSequence.from(prefix, StandardCharsets.UTF_8)).build());
    GetResponse response = MuteExceptionUtil.builder().withLog("get kv by prefix error")
        .executeCompletableFuture(getFuture);
    return response.getKvs();
  }
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dynamic-config/config-etcd/src/main/java/org/apache/servicecomb/config/etcd/EtcdClient.java [238:246]:
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  private List<KeyValue> getValuesByPrefix(String prefix) {

    CompletableFuture<GetResponse> getFuture = client.getKVClient()
        .get(ByteSequence.from(prefix, StandardCharsets.UTF_8),
            GetOption.builder().withPrefix(ByteSequence.from(prefix, StandardCharsets.UTF_8)).build());
    GetResponse response = MuteExceptionUtil.builder().withLog("get kv by prefix error")
        .executeCompletableFuture(getFuture);
    return response.getKvs();
  }
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