Method set_expr_version

common/ast.h:135–137

  // analysis.
  absl::string_view expr_version() const { return expr_version_; }
  void set_expr_version(absl::string_view expr_version) {
    expr_version_ = expr_version;
  }

  // Computes the source location (line and column) for the given expression ID
  // from the source info (which stores absolute positions).