Guarantees on order of nodes

[acsor]

For a project I'm working on, I use pydot to handle directed graphs as trees, and it is vital for me that the order of "children" of a node (speaking in the language of trees) is respected. I know that for dot, and therefore pydot, there's no such a thing as a tree as I mean it. Therefore the order of "children" of a node depends on how edges are internally represented by pydot.

Does this library make any guarantees on the order of its nodes? I'm building some programmatically, as pictured below

and so far, the nodes order reflected the order of insertion, which is what I expected and wanted. However, there's no statement in the documentation nor elsewhere that assures this is always the case. As far as I know, it could just depend by my own setup.