Bug 86135 Make use of new IResource#revertModificationStamp(long) API
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/internal/core/refactoring/ContentStamps.java
}
		}
		return result;
	}
	
	public static void remove(IFile file) {
		try {
			file.setSessionProperty(CONTENT_STAMP, null);
		} catch (CoreException e) {
		}
	}
	
	public static void increment(IFile file) {
		try {
			ContentStampImpl stamp= (ContentStampImpl)file.getSessionProperty(CONTENT_STAMP);
			if (stamp == null)
				return;
			file.setSessionProperty(CONTENT_STAMP, new ContentStampImpl(stamp.fValue + 1));
		} catch (CoreException e) {
		}
	}
	
	public static void set(IFile file, ContentStamp stamp) {
		try {
			file.setSessionProperty(CONTENT_STAMP, stamp);
		} catch (CoreException e) {
		}
	}	
}