code: func (h *Handler) Handle(err error) {
  	// Get the context from the error
  	ctx := keyvals.ToMap(emperror.Context(err))
  
  	// Expose the stackTracer interface on the outer error (if there is stack trace in the error)
  	// Convert error with stack trace to an internal error type
  	if e, ok := emperror.ExposeStackTrace(err).(stackTracer); ok {
  		err = newCauseStacker(e)
  	}
  
  	if req, ok := httperr.HTTPRequest(err); ok {
  		h.client.RequestErrorWithStackSkipWithExtras(rollbar.ERR, req, err, 3, ctx)
  
  		return
  	}
  
  	h.client.ErrorWithStackSkipWithExtras(rollbar.ERR, err, 3, ctx)
  }
docs: // Handle sends the error to Rollbar.