Different entities are called BuiltinMethodId

[EgorkaKulikov]

Description

Potential refactoring

Currently we have an entity BuiltinMethodId in our code.

Actually it represents different objects: our util methods, wrappers for real functions for items in classpath (like Mockito methods) or different real functions (like Class.forName).

It is very difficult to describe all builtins in switch statement, so we often have problems with adding a new one.

[korifey]

I suggest to speak with @alexeyfridman and design new tag for refactoring

[alisevych]

Blocked by ClassId feature implementation