Method expr_version

common/ast.h:134–134

The expr version indicates the major / minor version number of the `expr` representation. The most common reason for a version change will be to indicate to the CEL runtimes that transformations have been performed on the expr during static analysis.

  // runtimes that transformations have been performed on the expr during static
  // analysis.
  absl::string_view expr_version() const { return expr_version_; }
  void set_expr_version(absl::string_view expr_version) {
    expr_version_ = expr_version;
  }