public void startDocument(){
  fValueStores.clear();
  fIdentityConstraint2ValueStoreMap.clear();
  fGlobalIDConstraintMap.clear();
  fGlobalMapStack.removeAllElements();
}

public void startDocument ( ) { fValueStores . clear ( ) ; fIdentityConstraint2ValueStoreMap . clear ( ) ; fGlobalIDConstraintMap . clear ( ) ; fGlobalMapStack . removeAllElements ( ) ; }
resets the identity constraint cache .
