var google.golang.org/grpc.errConnDrain

3 uses

	google.golang.org/grpc (current package)
		balancer_wrapper.go#L355: 	acbw.ccb.cc.removeAddrConn(acbw.ac, errConnDrain)
		clientconn.go#L74: 	errConnDrain = errors.New("grpc: the connection is drained")
		clientconn.go#L1727: 		if err == errConnDrain {