loc, operands[0].getType(), result.attributes);
    return builder_.create<mlir::tf_executor::NextIterationSinkOp>(
        loc, source_op.getToken(), operands, result.attributes);
  }
  if (node.IsLoopCond()) {
    return builder_.create<mlir::tf_executor::LoopCondOp>(loc, types, operands,
                                                          result.attributes);
  }
  if (node.IsEnter()) {