References and resolve

I'm developing a custom scala like langauge plugin. Implementing "References and resolve" from now. I'm trying to understand how to do that for a "proper" language. I checked Scala, GoSu and others but not sure I can understand what exactly is going on there. Explanation from the guide is following: "Resolving references means the ability to go from the usage of an element (access of a variable, call of a method and so on) to the declaration of the element". So I did what it said. I tried to find declaration of the element in current scope, then went one level up, and up and so on. Here is what I ended up with . Am I doing it in a right way?


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