/** Removes last step request. */ void removeStepRequest() { if (stepRequest != null) { requestManager.deleteEventRequest(stepRequest); stepRequest = null; } if (findSourceMER != null) { requestManager.deleteEventRequest(findSourceMER); findSourceMER = null; } if (findSourceSR != null) { requestManager.deleteEventRequest(findSourceSR); findSourceSR = null; } }