Intent of timestamp.go ×1

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 5 tests
- server/ 5 tests
  - common/ 5 tests
    
    nexus/ 5 tests
    
    nexusrpc/ 5 tests
    
    go.temporal.io/server/common/nexus/nexusrpc/TestFailureCompletion Inherited completion.go ×1
    
    go.temporal.io/server/common/nexus/nexusrpc/TestFailureCompletion_CustomFailureConverter Inherited completion.go ×1
    
    go.temporal.io/server/common/nexus/nexusrpc/TestMarshalTimestampFormats Introduced here
    
    go.temporal.io/server/common/nexus/nexusrpc/TestSuccessfulCompletion Inherited TestSuccessfulCompletion
    
    go.temporal.io/server/common/nexus/nexusrpc/TestUnmarshalTimestampRoundtripAndErrors Inherited timestamp.go ×2