private FormatManager createFullFormatManager() {
		CodeViewerService codeViewer = plugin.getTool().getService(CodeViewerService.class);
		return codeViewer.getFormatManager();
	}
Field format manager for restoring to the default 'minimal' view
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FGController.java