Intent of operation.go ×2

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 3 tests
- server/ 3 tests
  - chasm/ 3 tests
    
    lib/ 3 tests
    
    nexusoperation/ 3 tests
    
    TestHandleNexusCompletion/ 3 tests
    
    Success/ 3 tests
    
    go.temporal.io/server/chasm/lib/nexusoperation/TestHandleNexusCompletion/Success/AfterStarted Introduced here
    
    go.temporal.io/server/chasm/lib/nexusoperation/TestHandleNexusCompletion/Success/CompletionBeforeStart Inherited CompletionBeforeStart
    
    go.temporal.io/server/chasm/lib/nexusoperation/TestHandleNexusCompletion/Success/CompletionBeforeStartWithoutStartTime Inherited CompletionBeforeStartWithoutStartTime