Bug 302791 [CommonNavigator] Associated editor does not close when deleting resource (editorInput) through CommonNavigator
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/CustomAndExpression.java
protected List fExpressions;
	/**
	 * Create an AND-type core expression from an IConfigurationElement of
	 * arbitrary name. The children elements are combined using boolean AND
	 * semantics to evaluate the expression.
	 * 
	 * @param element
	 *            An IConfigurationElement of arbitrary name.
	 */
	public CustomAndExpression(IConfigurationElement element) {
		Assert.isNotNull(element);
		IConfigurationElement[] children = element.getChildren();
		if (children.length > 0) {