first_clean_frame

# File activesupport/lib/active_support/backtrace_cleaner.rb, line 94
      def first_clean_frame(kind = :silent)
        caller_location_skipped = false

        Thread.each_caller_location do |location|
          unless caller_location_skipped
            caller_location_skipped = true
            next
          end

          frame = clean_frame(location, kind)
          return frame if frame
        end
      end