This places the context back to the previous function, which is the proper flow in the callchain.
这会将上下文返到回前一个函数，由此，就可以产生正确的调用链过程。
2
As the callchain is parsed from the trace file, a connectivity matrix is built that identifies which functions call which other functions.
在分析跟踪文件中的调用链时，会构建一个连通矩阵，用来表示哪个函数调用了其他哪些函数。
3
Once that is done the ObserveOnTest function attaches the unit test framework to the callchain via a specialized scheduler called the WorkItemTestScheduler.