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backtrace_locations 

        # Thread.backtrace_locations

(from ruby core)
---
    thread.backtrace_locations(*args)   -> array or nil

---

Returns the execution stack for the target thread---an array containing
backtrace location objects.

See Thread::Backtrace::Location for more information.

This method behaves similarly to Kernel#caller_locations except it
applies to a specific thread.

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