package Ġde . die ka utz . fed eration server . datasource . persistent Ċ Ċ import Ġde . die ka utz . fed eration server . model . Federation Address Entity Ċ import Ġorg . springframework . data . repository . Crud Repository Ċ Ċ interface ĠMySQL Repository : ĠCr ud Repository < Federation Address Entity , ĠString > Ġ{ ĊĊĠĠĠ Ġfun Ġfind Distinct First By AccountId Equals ( accountId : ĠString ): ĠFed eration Address Entity ? Ċ Ċ }