本人idea 版本为 2021.1，顺利编译 thingsboard 打开进行源码阅读时，发现报 Cannot resolve symbol 'TransportProtos'，如下图：
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解决方式：打开idea菜单： File->setting->plugins 搜索 proto*, 安装 protocol Buffer Linter插件, 并重启
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重启后，又出一个问题：
The file size(3.67 MB) exceeds the configured limit(2.56 MB). Code insight features are not available
如图：
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解决方式：
打开idea 的路径，找到 bin 下的 idea.properties 配置文件， 记事本打开，搜索 idea.max.intellisense.filesize将值修改更大一些, 再重启idea
# Maximum file size (in KiB) IDE should provide code assistance for.
# The larger file is the slower its editor works and higher overall system memory requirements are
# if code assistance is enabled. Remove this property or set to very large number if you need
# code assistance for any files available regardless of their size.
#---------------------------------------------------------------------
idea.max.intellisense.filesize=5000
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