public static String getMethodName(final String methodName) {
        return "promise_" + methodName;
    }
Get methodName to get tars proxy.

@param methodName methodName
@return methodName
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-tars/src/main/java/org/apache/shenyu/plugin/tars/util/PrxInfoUtil.java