code: func (h *Health) Healthy() bool {
  	return h.KnowNN && h.ConnectNN && h.CountKnowNN > 0 && h.Saturated
  }
docs: // Healthy return the strict interpretation of `Healthy` given a `Health` struct
  // definition of strict health: all conditions must be true:
  // - we at least know one peer
  // - we know all neighbors
  // - we are connected to all known neighbors
  // - it is saturated