Bug 32038 Use shared images for properties, tasks, bookmarks views
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/tasklist/MarkerUtil.java
case IMarker.SEVERITY_INFO:
					return getImage("info");
			}
		}
		else if (isMarkerType(marker, IMarker.TASK)) {
			return getImage("task");
		}
		return null;
	}
	/**
	 * Returns the image descriptor with the given key, or <code>null</code> if not found.
	 */
	static ImageDescriptor getImageDescriptor(String key) {
		ImageDescriptor desc = (ImageDescriptor) imageDescriptors.get(key);
		if (desc == null) {
			System.err.println("TaskList: No image descriptor for " + key); 
		}
		return desc;
	}
	/**
	 * Returns the text for the line and location column given the marker.
	 */
	public static String getLineAndLocation(IMarker marker) {
		int lineNumber = getLineNumber(marker);
		String location = getLocation(marker);
		return getLineAndLocation(lineNumber, location);
	}
	/**
	 * Returns the text for the line and location column given the line number and location text.
	 */