Function call - what UML diagram better to use

[Killerman]

What UML diagram better to use if I need to describe nested functions call of the same object?

I tried to use Sequence diagram, but seems it is only for different objects messages (function calls), and I need - for the same object.

[angus]

You can use “Recursive Message” to show. Please see the attached image for more detail.

nested_function_call.png