}

// SetupForPair runs the given function for every source instance in every cluster in combination with every
// destination service.
//
// Example of how long this setup lasts before the given context is cleaned up:
//   - a/to_b/from_cluster-1
//   - a/to_b/from_cluster-2
//   - cleanup...
//   - a/to_b/from_cluster-2
//   - ...