add hold order follow order

Helius

2020-08-03 234458c4252ffd10930913e07e91641b0757ff8a

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package com.xcong.excoin.modules.blackchain.service; 
 
import com.xcong.excoin.common.response.Result; 
 
public interface BlockSerive { 
 
    Result findBlockAddress(String symbol); 
 
}