Bug 65268 [projection] editor is missing collapse all action for code folding
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
}
	}
	
	/**
	 * Collapses all foldable members if supported by the folding
	 * structure provider.
	 * 
	 * @since 3.2
	 */
	public void collapseMembers() {
		if (fProjectionModelUpdater instanceof IJavaFoldingStructureProviderExtension) {
			IJavaFoldingStructureProviderExtension extension= (IJavaFoldingStructureProviderExtension) fProjectionModelUpdater;
			extension.collapseMembers();
		}
	}
	
	/**
	 * Collapses all foldable comments if supported by the folding
	 * structure provider.
	 * 
	 * @since 3.2
	 */
	public void collapseComments() {
		if (fProjectionModelUpdater instanceof IJavaFoldingStructureProviderExtension) {
			IJavaFoldingStructureProviderExtension extension= (IJavaFoldingStructureProviderExtension) fProjectionModelUpdater;
			extension.collapseComments();
		}
	}
}