txlcn-tc/src/main/java/com/codingapi/txlcn/tc/core/DTXLocalContext.java
public static void makeNeverAppeared() {
        if (currentLocal.get() != null) {
            log.debug("clean thread local[{}]: {}", DTXLocalContext.class.getSimpleName(), cur());
            currentLocal.set(null);
        }
    }
public static void makeNeverAppeared() {
        if (currentLocal.get() != null) {
            log.debug("clean thread local[{}]: {}", DTXLocalContext.class.getSimpleName(), cur());
            currentLocal.set(null);
        }
    }
清理线程变量