public boolean add(Boolean value) {
		if (value == null) {
			stateList.add(Type.NULL);
		} else {
			stateList.add(Type.BOOLEAN);
		}

		return super.add(value);
	}
public boolean add ( Boolean value ) { if ( value == null ) { stateList . add ( Type . NULL ) ; } else { stateList . add ( Type . BOOLEAN ) ; } return super . add ( value ) ; }
see {@link List#add(Object)}.
this method is alternative of {@link #add(Object, Type)} call with {@link Type#BOOLEAN}.
@param value
@return see {@link List#add(Object)}
@since 1.4.12
@author vvakame