public void putVertexLocation(FGVertex vertex, Point point) {
		Address vertexAddress = vertex.getVertexAddress();

		Point pointCopy = new Point(point); // points are not immutable, so copy the given one
		if (vertex instanceof GroupedFunctionGraphVertex) {
			groupLocationUpdateMap.put(vertexAddress, new SaveablePoint(pointCopy));
		}
		else {
			locationUpdateMap.put(vertexAddress, new SaveablePoint(pointCopy));
		}
	}
Note: this method does not clear group vertex locations.
@param functionGraph function graph
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FunctionGraphVertexAttributes.java