| Name | Description | Type | Package | Framework |
| TraitASTTransformation | Handles generation of code for the @Trait annotation. | Class | org.codehaus.groovy.transform.trait | Groovy |
| TraitComposer | This class contains a static utility method doExtendTraits(org. | Class | org.codehaus.groovy.transform.trait | Groovy |
| Traits | A collection of utility methods used to deal with traits. | Class | org.codehaus.groovy.transform.trait | Groovy |
| Traits .TraitBridge | Internal annotation used to indicate that a method is a bridge method to a trait default implementation. | Class | org.codehaus.groovy.transform.trait.Traits | Groovy |