package Ġcom . cost ular . mar vel hero es . data . db Ċ Ċ import Ġandroid . arch . persistence . room . Database Ċ import Ġandroid . arch . persistence . room . Room Database Ċ import Ġcom . cost ular . mar vel hero es . domain . model . Mar vel Hero Entity Ċ Ċ @ Database ( entities Ġ= Ġ[ Mar vel Hero Entity :: class ], Ġversion Ġ= Ġ 1 ) Ċ abstract Ġclass ĠHero Database : ĠRoom Database () Ġ{ ĊĠĠĠ Ġabstract Ġfun Ġget Hero Dao (): ĠHero Dao Ċ }