package Ġapp . cash . back fil a . client . mis k . internal Ċ Ċ import Ġapp . cash . back fil a . protos . service . Configure Service Request Ċ import Ġapp . cash . back fil a . protos . service . Configure Service Response Ċ Ċ internal Ġinterface ĠBack fil a Client Ġ{ ĊĠ Ġfun Ġconfigure Service ( request : ĠConfigure Service Request ): ĠConfigure Service Response Ċ } Ċ