MigrationFailureReason

MigrationFailureReason: {
  readonly IncompatibleSubtype: 'incompatible-subtype'
  readonly MigrationError: 'migration-error'
  readonly TargetVersionTooNew: 'target-version-too-new'
  readonly TargetVersionTooOld: 'target-version-too-old'
  readonly UnknownType: 'unknown-type'
  readonly UnrecognizedSubtype: 'unrecognized-subtype'
}