[Seaside] How to control ID of a component?

[itsme213]

I would like to control / record the ID of a component for use in the Ajax 
behavior of other components.

e.g. I have a ToolbarComponent with links on it. I want those links to have 
onClick update behavior, inserting stuff into a different component 
ListComponent. To do this the ToolbarComponent needs to use the ID of the 
ListComponent. If these were just #renderXYZ methods (instead of separate 
component) I could easily pass the ID around. The problem is they are two 
separate components, and #renderContentOn: is called by the framework 
without the option of passing  in an ID.

I can't do these IDs statically e.g. I may have lots of these on a page.

Any suggestions? Am I thinking of the problem incorrectly?

Thanks!

Sophie