legacyregistry.RawMustRegister(grpcprom.DefaultClientMetrics)
	dbMetricsMonitors = make(map[string]struct{})

	l, err := logutil.CreateDefaultZapLogger(etcdClientDebugLevel())
	if err != nil {
		l = zap.NewNop()
	}
	etcd3ClientLogger = l.Named("etcd-client")
}

// etcdClientDebugLevel translates ETCD_CLIENT_DEBUG into zap log level.
// NOTE(negz): This is a copy of a private etcd client function:

        AvlNode<E> newTop = pred();
        // newTop is the maximum node in my left subtree
        newTop.left = left.removeMax(newTop);
        newTop.right = right;
        newTop.distinctElements = distinctElements - 1;
        newTop.totalCount = totalCount - oldElemCount;
        return newTop.rebalance();
      } else {
        AvlNode<E> newTop = succ();

        AvlNode<E> newTop = pred();
        // newTop is the maximum node in my left subtree
        newTop.left = left.removeMax(newTop);
        newTop.right = right;
        newTop.distinctElements = distinctElements - 1;
        newTop.totalCount = totalCount - oldElemCount;
        return newTop.rebalance();
      } else {
        AvlNode<E> newTop = succ();

        mlir::Operation *new_op = builder.clone(*op.getOperation());
        new_op->setAttr(kDeviceAttr, device_attr);
        cloned_op_by_device[device_attr.getValue()] = new_op;
      }
      // Update the user operation to use the result of the cloned ConstOp.
      mlir::Operation *new_op = cloned_op_by_device[device_attr.getValue()];
      user_op->setOperand(use.getOperandNumber(), new_op->getResult(0));
    }

  // orig_op, except the op name.
  auto* new_op = new EagerOperation(&ctx);
  TF_RETURN_IF_ERROR(
      new_op->Reset(fname.c_str(), orig_op->DeviceName().c_str()));
  for (auto input : orig_op->GetInputs()) {
    TF_RETURN_IF_ERROR(new_op->AddInput(input));
  }
  new_op->MutableAttrs()->CopyAttributes(orig_op->Attrs());
  out_op->reset(new_op);

  LOG_FIRST_N(INFO, 1)

int replace(OP op, int count) {
  OpBuilder builder(op);
  std::string name = absl::StrFormat("_iterator%d", count++);

  auto new_op = builder.create<TF::IteratorOp>(
      op->getLoc(), op->getResultTypes()[0], name, /*container=*/"",
      op.getOutputTypes(), op.getOutputShapes());
  op->getResults()[0].replaceAllUsesWith(new_op->getResults()[0]);
  if (op->use_empty()) op->erase();
  return count;
}

  auto new_op = OpBuilder(op).create<TFL::WhileOp>(
      op->getLoc(), op->getResultTypes(), op->getOperands(),
      while_op.getIsStateless());
  Location loc = while_op->getLoc();
  CreateRegionWithCall(while_op.cond_function(), new_op.getCond(), loc);
  CreateRegionWithCall(while_op.body_function(), new_op.getBody(), loc);

  op->replaceAllUsesWith(new_op.getResults());
  op->erase();
}

                                                .cast<quant::QuantizedType>()
                                                .getStorageType());
        auto new_op = builder.create<TFR::CastOp>(
            returned_op->getLoc(), new_type, returned_op.getArg());
        returned_value.set(new_op.getResult());
        if (returned_op.use_empty()) {
          returned_op.erase();
        }
      } else {

  auto new_op = OpBuilder(op).create<CaseOrIfOp>(
      op.getLoc(), first_branch.getFunctionType().getResults(), new_operands,
      op->getAttrs());
  for (const auto& entry : output_buffer_to_size) {
    (*buffer_to_size)[new_op.getResult(std::get<0>(entry))] = {
        new_op.getResult(std::get<1>(entry)), std::get<2>(entry)};
  }
  op.replaceAllUsesWith(new_op.getResults().take_front(op.getNumResults()));

  auto operands = llvm::to_vector<4>(op->getOperands());
  operands.push_back(operand);
  auto new_op = builder->create<OpT>(op->getLoc(), op->getResultTypes(),
                                     operands, attr.getAttrs());
  op->replaceAllUsesWith(new_op.getOperation()->getResults());
  op->erase();
  return new_op;
}

// Returns success if the function has at most one op of the template type and