question: public void close ( ) { while ( ! mReceivers . isEmpty ( ) ) { mContext . unregisterReceiver ( mReceivers . remove ( 0 ) ) ; } if ( mOutputWriter != null ) { try { mOutputWriter . close ( ) ; } catch ( IOException e ) { Log . w ( mTag , "Test output file could not be closed" , e ) ; } } }
target:  Closes the utility instance and unregisters any BroadcastReceivers.