package Ġorg . open min ed . sy ft . monitor Ċ Ċ import Ġio . reactivex . Flow able Ċ Ċ interface ĠBroad Cast Listener Ġ{ ĊĠĠĠ Ġfun Ġsubscribe StateChange (): ĠFlow able < StateChange Message > ĊĠĠĠ Ġfun Ġunsubscribe StateChange () Ċ }