question: public void unlockPortal ( final int ID ) { if ( ! unlockedPortals . contains ( ID ) ) { unlockedPortals . add ( ID ) ; logger . debug ( "Added portal ID " + Integer . toString ( ID ) + " to unlocked portals for player " + getName ( ) + "." ) ; } }
target:  Adds a portal ID to a list of "unlocked" portals for player.