question: public synchronized void removeIconsForPkg ( String packageName , UserHandleCompat user ) { removeFromMemCacheLocked ( packageName , user ) ; long userSerial = mUserManager . getSerialNumberForUser ( user ) ; mIconDb . delete ( IconDB . COLUMN_COMPONENT + " LIKE ? AND " + IconDB . COLUMN_USER + " = ?" , new String [ ] { packageName + "/%" , Long . toString ( userSerial ) } ) ; }
target:  Removes the entries related to the given package in memory and persistent DB.