public void setIsInterface() throws UnknownTypeException { if (getState() == KNOWN && !isInterface()) throw new UnknownTypeException("Type " + getSignature() +
public void setIsInterface(boolean isInterface) { if (getState() == KNOWN && isInterface() != isInterface) throw new IllegalStateException("Type " + getClassName() +
	public void setIsInterface() throws UnknownTypeException {		if (getState() == KNOWN && !isInterface())			throw new UnknownTypeException("Type " + getSignature() +				" marked as both class and interface");		setState(KNOWN);		isInterface = true;	}