package Ġcom . gh ata a . mi acon ception Ċ Ċ import Ġandroid . app . Application Ċ import Ġcom . gh ata a . mi acon ception . api . Default Messaging Service Ċ import Ġcom . google . firebase . messaging . Firebase Messaging Ċ Ċ class ĠApp Ġ: ĠApplication () Ġ{ ĊĊĠĠĠ Ġoverride Ġfun ĠonCreate () Ġ{ ĊĠĠĠĠĠĠĠ Ġsuper . onCreate () ĊĊĠĠĠĠĠĠĠ ĠFirebase Messaging . getInstance (). subscribe To Topic ( Default Messaging Service . TOPIC _ MESSAGES ) ĊĠĠĠ Ġ} Ċ } Ċ