更新泛型使用相关的文档 #193

Job	Run time
unittest-osx-dotnet	7m 27s
unittest-run-testcase-and-build-android	5m 53s
unittest-linux-dotnet	5m 27s
unittest-win-dotnet	8m 20s
unittest-run-android-in-linux	0s
	27m 7s

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