Bug 221337 [Markers] MarkerItem has too much API
We are exposing too much as API in MarkerItem. We should only provide getAtttributeValue and the methods that support PATH_ATTRIBUTE and NAME_ATTRIBUTE as they are tricky. Everything else needs to be pushed down to an internal class. We should mention the relevant IMarker constants for those removed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/MarkerItem.java
* @return MarkerEntry
	 */
	public abstract MarkerEntry getConcreteRepresentative();
	/**
	 * Return the creation time for the receiver.
	 * @return long
	 */
	public long getCreationTime() {
		return -1;
	}
	/**
	 * Return the description of the receiver.
	 * 
	 * @return String
	 */
	public abstract String getDescription();
	/**
	 * Return the ID of the receiver
	 * @return String
	 */
	public long getID() {
		return -1;
		
	}
	/**
	 * Get the location string for the receiver.
	 * 
	 * @return String
	 * @see IMarker#LOCATION
	 */