package Ġcom . graf sem mel . sed ative . library Ċ Ċ interface ĠDiff able Ġ{ ĊĠĠĠ Ġfun Ġis Same Item ( item : ĠDiff able ): ĠBoolean Ġ= Ġthis Ġ== Ġitem ĊĠĠĠ Ġfun Ġhas Same Contents ( item : ĠDiff able ): ĠBoolean Ġ= Ġthis Ġ== Ġitem Ċ }