Overridden by: FeAbstractWrapperDef FeDirectWrapperDef FeIndirectWrapperDef
Overridden by: FeAbstractWrapperDef
Overridden by: FeAbstractWrapperDef FeDirectWrapperDef FeIndirectWrapperDef
Make a WrapperSpec for this definition and return it
Overridden by: FeAbstractWrapperDef FeDirectWrapperDef FeIndirectWrapperDef
Tell whoever cares about the spec for this type