pfx = (kind & EXCEPTION) != 0 ? "e" : "_";
int flags = getFlags(); if (flags == 0) pfx = "_"; else { if ((flags & EXCEPTION) != 0) pfx += "e"; if ((flags & PARAM) != 0) pfx += "p"; if ((flags & RETURN_VAL) != 0) pfx += "r"; }
	public String toString() {		String pfx = "";		if (DEBUG_EXCEPTION) {			pfx = (kind & EXCEPTION) != 0 ? "e" : "_";		}		switch (kind & ~EXCEPTION) {		case NULL:			return pfx + "n";		case CHECKED_NULL:			return pfx + "w";		case NN:			return pfx + "N";		case CHECKED_NN:			return pfx + "W";		case NSP:			return pfx + "s";		case NN_UNKNOWN:			return pfx + "-";		case NCP2:			return pfx + "/";		default:			throw new IllegalStateException("unknown kind of IsNullValue: " + kind);		}	}