/** * Return whether the given content extension is a root extension. * * @param aContentExtensionId * the id of the content extension. * @return whether the given content extension is a root extension */ public boolean isRootExtension(String aContentExtensionId) { return programmaticRootBindings.contains(aContentExtensionId) || viewerDescriptor.isRootExtension(aContentExtensionId); }