| abstract class AbstractWinterExtension : ParameterResolver | |
| open class WinterAllExtension : AbstractWinterExtension, BeforeAllCallback, AfterAllCallbackJUnit5 extension that starts a io.jentz.winter.testing.WinterTestSession before all tests and stops the session after all tests. | |
| open class WinterEachExtension : AbstractWinterExtension, BeforeEachCallback, AfterEachCallbackJUnit5 extension that starts a io.jentz.winter.testing.WinterTestSession before each test and stops the session after each test. | 
| annotation class WInjectThis annotation can be used to inject values into JUnit5 methods and constructors by using the test graph to resolve them. |