namespace tensorflow {
namespace {

using error::Code;
using ops::Assign;
using ops::Const;
using ops::CountUpTo;
using ops::FIFOQueue;
using ops::QueueClose;
using ops::QueueDequeue;
using ops::QueueEnqueue;
using ops::RandomNormal;
using ops::Square;
using ops::Variable;

constexpr char kAssignOpName[] = "assign";
constexpr char kCancelOp0[] = "cancel0";
constexpr char kCancelOp1[] = "cancel1";