Intent of start_to_close_timeout

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 1 test
- server/ 1 test
  - chasm/ 1 test
    
    lib/ 1 test
    
    activity/ 1 test
    
    TestTransitionTimedout/ 1 test
    
    go.temporal.io/server/chasm/lib/activity/TestTransitionTimedout/start_to_close_timeout Introduced here