def extract_backtrace
      stack = caller
      while (first = stack.first) && first.include?(SELF_PATTERN)
        stack.shift
      end
      stack
    end
def extract_backtrace
      stack = caller
      while (first = stack.first) && first.include?(SELF_PATTERN)
        stack.shift
      end
      stack
    end
Extract the callers backtrace leaving out Sapience