Find All References to Dateportal_Update

Hi,

Few questions around code navigation:

Main Question:

How can I find all references to dataportal update for a particular class which inherits from BusinessBase?

My ideas so far

Is dataportal_update only called from Base.Save() ?

Is there any way to find the code which calls Save for the derrived class only? (FindReferences finds all implementations of BusinessBase)

Kind Regards

sean