Extent of returns_sentinel_when_no_output_exists

All 10 source ranges in this concept · page 1 of 1.

Source range	Introduced
`go.temporal.io/server/tools/testrunner/log.go:402`	Inherited log.go ×3
`go.temporal.io/server/tools/testrunner/log.go:359`	Inherited log.go ×2
`go.temporal.io/server/tools/testrunner/log.go:346-351`	Inherited log.go ×4
`go.temporal.io/server/tools/testrunner/log.go:435`	Inherited log.go ×2
`go.temporal.io/server/tools/testrunner/log.go:424-425`	Inherited log.go ×3
`go.temporal.io/server/tools/testrunner/log.go:362-366`	Inherited log.go ×4
`go.temporal.io/server/tools/testrunner/log.go:356`	Inherited log.go ×3
`go.temporal.io/server/tools/testrunner/log.go:371`	Inherited log.go ×4
`go.temporal.io/server/tools/testrunner/log.go:369`	Inherited log.go ×1
`go.temporal.io/server/tools/testrunner/log.go:374-376`	Inherited log.go ×4