Multiple Stop Conditions

Hi, I like the ability to early-stop the propagator on certain stop conditions, but I wonder if it is possible to stop the propagator on an AND-condition of multiple stop condition, e.g. if sma, ecc, inc, raan and aop match at the same time. On a first try implementing it myself I got stuck on the eval_crossing method of Event. Can you guide me or implement it in the library?