private ICompilationUnit getCompilationUnit(IMarker marker) {
private static ICompilationUnit getCompilationUnit(IMarker marker) {
	private ICompilationUnit getCompilationUnit(IMarker marker) {		IResource res= marker.getResource();		if (res instanceof IFile && res.isAccessible()) {			IJavaElement element= JavaCore.create((IFile) res);			if (element instanceof ICompilationUnit)				return (ICompilationUnit) element;		}		return null;	}