const runtime.waitReasonCoroutine

5 uses

	runtime (current package)
		coro.go#L51: 		gp = newproc1(startfv, gp, pc, true, waitReasonCoroutine)
		coro.go#L167: 		gp.waitreason = waitReasonCoroutine
		runtime2.go#L1081: 	waitReasonCoroutine                               // "coroutine"
		runtime2.go#L1128: 	waitReasonCoroutine:             "coroutine",
		runtime2.go#L1185: 	waitReasonCoroutine:           true,