assuming you are researching on the topic design and implementation of an automative framework to optimize prometheus efficiency. and on the course of your research, you decided to integrate ansible playbooks for the automation of metrics to be scrape by prometheus and grafana for visualisation. and you installed the following exporters; node exporter, win exporter, snmp exporter and alert manager to be able to connect prometheus to the devices it has to monitor. come out with a uml use case diagram to demonstrate how the following softwares relate to each other in the proposed system to better optimize prometheus efficiency.