public SourceRange(IProblem problem) { this(problem.getSourceStart(), problem.getSourceEnd() - problem.getSourceStart() + 1);
public SourceRange(int offset, int length){ fLength= length; fOffset= offset;
	public SourceRange(IProblem problem) {		this(problem.getSourceStart(), problem.getSourceEnd() - problem.getSourceStart() + 1);	}