// op. The MapDataset op always has N+1 inputs.
  // TODO(jpienaar): Avoid this lookup.
  auto module = op->getParentOfType<ModuleOp>();
  auto f = module.lookupSymbol<func::FuncOp>(op.getF());
  // Skip if function is not found or more than one caller.
  if (!f || !llvm::hasSingleElement(GetCallers(f))) return false;
  return InferShapeForDatasetOpCommon(op, f, max_iterations);
}