auto branch_name = [](unsigned index) -> std::string {
    return index == 0 ? "'then_branch'" : "'else_branch'";
  };
  return VerifyCaseOrIfOpBranchFunctions(
      symbol_table, *this, {getThenBranchAttr(), getElseBranchAttr()},
      branch_name);
}

//===----------------------------------------------------------------------===//
// IfOp canonicalization.