when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String swagger,
    2. Info? info,
    3. String? host,
    4. String? basePath,
    5. List<String>? schemes,
    6. List<String>? consumes,
    7. List<String>? produces,
    8. Map<String, PathItem> paths,
    9. Map<String, Schema> definitions,
    10. Map<String, SecurityScheme> securityDefinitions,
    11. List<SecurityRequirement> security,
    12. ExternalDocs? externalDocs,
    13. List<Tag> tags,
    14. @JsonKey.new(includeIfNull: false, includeFromJson: false, includeToJson: false) Map<String, dynamic>? extensions,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String swagger,  Info? info,  String? host,  String? basePath,  List<String>? schemes,  List<String>? consumes,  List<String>? produces,  Map<String, PathItem> paths,  Map<String, Schema> definitions,  Map<String, SecurityScheme> securityDefinitions,  List<SecurityRequirement> security,  ExternalDocs? externalDocs,  List<Tag> tags, @JsonKey(includeIfNull: false, includeFromJson: false, includeToJson: false)  Map<String, dynamic>? extensions)  $default,) {final _that = this;
switch (_that) {
case _OpenAPI():
return $default(_that.swagger,_that.info,_that.host,_that.basePath,_that.schemes,_that.consumes,_that.produces,_that.paths,_that.definitions,_that.securityDefinitions,_that.security,_that.externalDocs,_that.tags,_that.extensions);case _:
  throw StateError('Unexpected subclass');

}
}