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backtrace_locations 

        # Exception.backtrace_locations

(from ruby core)
---
    exception.backtrace_locations    -> array or nil

---

Returns any backtrace associated with the exception. This method is
similar to Exception#backtrace, but the backtrace is an array of
Thread::Backtrace::Location.

This method is not affected by Exception#set_backtrace().

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