package Ġdata . t inder . dis like Ċ Ċ import Ġdata . ObjectMapper Ċ import Ġdomain . recommend ation . Domain Recommendation User Ċ Ċ internal Ġclass ĠDis like Request ObjectMapper ĊĠĠĠ Ġ: ĠObjectMapper < Domain Recommendation User , ĠString > Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġfrom ( source : ĠDomain Recommendation User ) Ġ= Ġsource . id Ċ } Ċ