public enum Severity: Sendable {
    /// The severity level for an issue which should be noted but is not
    /// necessarily an error.
    ///
    /// An issue with warning severity does not cause the test it's associated
    /// with to be marked as a failure, but is noted in the results.
    case warning

    /// The severity level for an issue which represents an error in a test.
    ///
    /// An issue with error severity causes the test it's associated with to be
    /// marked as a failure.
    case error
  }

Issue.record("My comment", severity: .warning)

/// The severity of the issue.
public var severity: Severity

  /// Whether or not this issue should cause the test it's associated with to be
  /// considered a failure.
  ///
  /// The value of this property is `true` for issues which have a severity level of
  /// ``Issue/Severity/error`` or greater and are not known issues via
  /// ``withKnownIssue(_:isIntermittent:sourceLocation:_:when:matching:)``.
  /// Otherwise, the value of this property is `false.`
  ///
  /// Use this property to determine if an issue should be considered a failure, instead of
  /// directly comparing the value of the ``severity`` property.
public var isFailure: Bool