private void updateGroupDescription(FGVertex vertex) {
		String text = GroupedFunctionGraphVertex.getVertexDescription(vertex);
		int index = groupDescription.indexOf(text);
		if (index != -1) {
			StringBuffer buffy = new StringBuffer(groupDescription);
			buffy.delete(index, index + text.length());
			groupDescription = buffy.toString();
		}
	}
Signals that the user has changed the text of a group node and that and this pre-existing
info needs to update.

@param text The new text
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/GroupHistoryInfo.java