absl::StatusOr<mlir::FlatSymbolRefAttr> ConvertFunctionCallName(
      const std::string& func_name);

  // Converts the given non-function-call AttrValue to an MLIR Attribute.
  absl::StatusOr<mlir::Attribute> ConvertAttributeValue(const AttrValue& value);

  // Converts the given function-call AttrValue to MLIR Attributes and pushes
  // them to the given attributes list. For example, if there is a kFunc