package Ġno . nav . f amil ie . kon tr ak ter . fel les . annot as jon er Ċ Ċ @ Target ( Annotation Target . CLASS , ĠAnnotation Target . FUNCTION , ĊĠĠĠĠĠĠĠ ĠAnnotation Target . VALUE _ PARAMETER , ĠAnnotation Target . EXPRESSION ) Ċ @ Retention ( Annotation Retention . SOURCE ) Ċ @ Must Be Document ed Ċ annotation Ġclass ĠImpro vement ( val Ġmessage : ĠString Ġ= Ġ"") Ċ