This quest to discover XEP-0410 (MUC Self-Ping (Schrödinger’s Chat)) was automagically added, to fulfill the quest at Discover XEPs. As of 2018-08-31 the status of this Standards Track XEP is Proposed. What does that even mean?! Check it out at XEP-0410: MUC Self-Ping (Schrödinger's Chat) 