question: public boolean remove ( AccessibleState state ) { if ( states == null ) { return false ; } else { return states . removeElement ( state ) ; } }
target:  Removes a state from the current state set.  If the state is not in the set, the state set will be unchanged and the return value will be false.  If the state is in the state set, it will be removed from the set and the return value will be true.