google.golang.org/grpc/internal/balancer/gracefulswitch.balancerWrapper.NewSubConn (method, view implemented interface methods)

one use

	google.golang.org/grpc/internal/balancer/gracefulswitch (current package)
		gracefulswitch.go#L330: func (bw *balancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {