thrift不支持的关键字：
https://github.com/apache/thrift/blob/master/compiler/cpp/src/thrift/generate/t_generator.cc //搜索keywords
https://github.com/apache/thrift/blob/master/compiler/cpp/src/thrift/generate/t_py_generator.cc //搜索keywords
https://livebook.manning.com/book/programmers-guide-to-apache-thrift/chapter-6/v-17/54
