Bug 287103 [CommonNavigator] contentServiceLabelProvider doesn't properly implement overrides
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptor.java
.getAttribute(ATT_POLICY));
		} else if (children.length > 1) {
			throw new WorkbenchException(NLS.bind(
					CommonNavigatorMessages.Too_many_elements_Warning,
					new Object[] {
							TAG_OVERRIDE,
							id,configElement.getDeclaringExtension()
							.getNamespaceIdentifier() }));
		}
	}
	/**
	 * @return Returns the icon.
	 */
	public String getIcon() {
		return icon;
	}
	/**
	 * @return Returns the suppressedExtensionId or null if none specified.
	 */
	public String getSuppressedExtensionId() {
		return suppressedExtensionId;
	}
	/**
	 * @return Returns the overridePolicy or null if this extension does not
	 *         override another extension.
	 */
	public OverridePolicy getOverridePolicy() {
		return overridePolicy;
	}
	/**