package Ġcom . ey gr aber . portal Ċ Ċ public Ġinterface ĠPortal Removed Listener Ġ{ ĊĠ Ġpublic Ġfun Ġon Portal Removed ( is Comp let ely Removed : ĠBoolean ) Ċ } Ċ Ċ public Ġinterface ĠLifecycle Portal Ġ: ĠPortal , ĠPortal Removed Listener Ġ{ ĊĠ Ġpublic Ġfun Ġadd Portal Removed Listener ( listener : ĠPortal Removed Listener ) ĊĠ Ġpublic Ġfun Ġremove Portal Removed Listener ( listener : ĠPortal Removed Listener ) Ċ } Ċ