public void unusedLabel(LabeledStatement statement) {
	int severity = computeSeverity(IProblem.UnusedLabel);
	if (severity == ProblemSeverities.Ignore) return;
	String[] arguments = new String[] {new String(statement.label)};
	this.handle(
		IProblem.UnusedLabel,
		arguments,
		arguments,
		ProblemSeverities.Ignore,
		statement.sourceStart,
		statement.labelEnd);
}