public static boolean isBlockInfoValid(BlockInfo blockInfo) {
        boolean isValid = !TextUtils.isEmpty(blockInfo.timeStart);
        isValid = isValid && blockInfo.timeCost >= 0;
        return isValid;
    }
Get key stack string to show as title in ui list.
blockcanary-android/src/main/java/com/github/moduth/blockcanary/ui/BlockCanaryUtils.java