Space Flight

Hola chicos, Moin zusammen, lasst uns Deutsch und Spanisch sprechen und ein paar Bier zusammen trinken, die Idee ist einfach und gut :) Bitte bringt zumindest basis Deutsch oder Spanisch Kenntnisse mit! Vamos a hablar español y alemán y tomar unas cervezas, la idea es simple y buena jaja. ¡Por favor, ven por lo menos con un nivel básico de español o alemán! Danke, gracias!

An inspiring, high-energy meeting of public speaking, connection, and personal growth in the heart of Berlin. **Mercury Toastmasters Berlin** invites you to our weekly meeting at our new home at **Das Center, Potsdamer Platz**, in the stunning **Historic Imperial Breakfast Hall**. *Experience the **power of prepared speeches** loaded with bold ideas, participate in our **dynamic Impromptu Session**, and **gain valuable insights** during our feedback segment.* *Leave with practical tools, fresh ideas, and renewed inspiration.* *Whether you want to speak up at work, boost your presence, or just meet inspiring people, you’ll feel at home at Mercury Toastmasters Berlin.* *** **[What to Expect:](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)** ✨ A supportive space to speak, grow, and connect 🎤 Engaging prepared speeches ⚡ Fun, fast-paced impromptu speaking challenges 💬 Feedback session you can actually use 🌍 A friendly, international crowd (around 25–30 people) **Schedule** (times may vary) ⏰ 19:15 - Doors open & networking 🎙️ 19:30 - Prepared Speeches 🏓 20:35 - Impromptu Session (Guest welcome to join) ↩️ 21:00 - Constructive feedback 💬 21:30 - Food, drinks & relaxed socializing **No experience needed.** ***Come curious. Leave energized.*** *** **🤙 [Hear it from our members:](https://maps.app.goo.gl/eRtvR9DRNqU9WZQn7)** *“You can sharpen your public speaking skills and gain tons of confidence, while having fun and making new friends. Mercury is well-structured, fun, and affordable.”* — *Therese Pitt* *“Mercury gave me a safe place to speak, create, and grow. I love the multicultural vibe and supportive community. It’s the best place to learn and have fun.”* — *Krisztina Linka* *** **[Did You Know?](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)** Toastmasters is where people go to get better at speaking—and grow into confident communicators and leaders. Today [Toastmasters ](https://mercurytoastmasters.de/about-mercury-toastmasters-berlin/)has 350,000+ members across 16,000 clubs in 143 countries. And [Mercury](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/) is one of the best places to experience it. So bring your curiosity, your energy—and just be yourself. Whether you’re just starting or ready to level up, there’s a place for you here. *** **[Wondering what you get as a member?](https://mercurytoastmasters.de/membership-mercury-toastmasters-berlin/)** Think expert feedback, real-world speaking practice, and a supportive crew that’s got your back. [See you Wednesday night! 🎉](https://mercurytoastmasters.de/find-toastmasters-meetings-in-berlin/)

📜 **Hear Ye, Hear Ye!** Good folk of the realm, I prithee embark upon a journey where merriment and jest have sworn fealty! 🛡️ **Presenting: "ENGLISH COMEDY KNIGHT"** ⭐⭐⭐⭐⭐ "The hottest comics in Berlin!" - Joan of Arc ⭐⭐⭐⭐⭐ "They may take the mickey but they'll never take our freedom!" - William Wallace ⭐⭐⭐⭐⭐ "A golden horde of comedic talent!" - Genghis Khan ⭐⭐⭐⭐⭐ "A really funny bunch of infidels!" - Saladin ⭐⭐⭐⭐⭐ "I can't give you a quote as I've just taken a vow of silence" - St. Francis of Assisi 👑 **Host: Johnny Armstrong** Johnny Armstrong is a multi-awarding comedian, the first expat from the Berlin comedy scene to become properly established on the German circuit, enjoying patronage from all the top clubs and appearing on numerous TV shows. **🏰 A Gathering of Jesters and Joy! ** In the noble tradition of medieval mirth, we summon thee to an eve of endless entertainment and hearty har-hars! A fellowship of jesters, foolhardy knights, and hilarious damsels shall grace our humble stage, armed with wit sharper than any sword, aiming to slay thee... with laughter! 📅 Date: every 3rd Wednesday of the month ⏰ 7pm is when we open the portcullis 🎭 8pm is when festivities commence 🏠 Location: WerkStadt, a tavern of considerable cheer 🎟️ Passage is FREE, but for that we accept patronage **🎉What to Expect? ** A cavalcade of jesters, bearing jokes and tales to tickle thy funny bone! A delightful array of potables, fit for kings and queens! A space where merry men and women may meet, converse, and let joy be unconfined! 📜 Verily, spread the word, invite kinsmen and fellow villagers, and let us together weave a tapestry of joyous memories in the hallowed halls of humour! Let mirth prevail!

Join me for my **Beginner Calisthenics Class** every Wednesday at 7pm at a park (check the location below) and learn how to build strength, flexibility and confidence using just your bodyweight. My name is Maroof 👋 and I’ve been practicing calisthenics for the last 6 years. I love this sport because I’m fascinated by the incredible movements the human body can achieve and I believe calisthenics connects people, builds communities and is one of the most sociable forms of fitness out there. In this class, we’ll cover the fundamentals like push-ups, squats and core exercises and also dive into the basics of more advanced movements such as the planche, front lever, back lever and freestyle calisthenics, all in a fun, supportive environment where you can progress at your own pace. We also play a quick team game at the end when there are a lot of participants. Winners get a small prize 😁 No experience needed, just bring comfortable clothes, some water and a positive attitude. **Price:** Free. This will be a recurring event every Wednesday unless stated otherwise. **Disclaimer:** Please keep in mind that you are responsible for your own safety. Only confirm if you are attending the event, and update your RSVP accordingly. If you have any questions or concerns, feel free to reach out!

In einer kleinen, gemütlichen Gruppe treffen wir uns regelmäßig, um den Tag mit positiver Energie zu beginnen - für mehr Vitalität und Lebensfreude. Mit Energieübungen, EdxTM nach Dr. Gallo - eine Meridianklopftechnik mit postiven Affirmationen, Atem- & Energieübungen ... und einem netten Gespräch bei Tee und Kaffee. Das Treffen ist kostenlos - Spenden sind willkommen! Wer möchte kann anschließend noch eine Access Bars Session zum Morning Special bekommen: https://www.i-feel-so-good.de/access-consciousness/access-consciousness-einzelsessions/access-bars-sessions.html Anmeldung bitte zeitnah telefonisch oder per whatsapp - die Plätze sind begrenzt

In the spirit of a 19th-century salon, this gathering will be a space for lively conversations, fascinating encounters, and the exchange of ideas over drinks. Whether you’re new in town or a local looking to expand your social circle, this is the perfect opportunity to connect with like-minded explorers of Berlin’s nightlife. Orga The location is **cash only**. It is non-smoking (with a separate room for smoking). We’ll be sitting on the couches in the first room. Questions? Check our Meetup-FAQs: [https://socialbutterfly.berlin/meetup-faq/](https://socialbutterfly.berlin/meetup-faq/) Meet your host I’m Julia — a Berlin local who loves bringing people together. My path went from growing up in a dance school to studying philosophy to working in IT support, and somehow all of that led me here: hosting meetups and creating spaces where people can show up, relax, and connect. Insta [https://www.instagram.com/juwaberlin/](https://www.instagram.com/juwaberlin/) LinkedIn [https://www.linkedin.com/in/julia-waehnert/](https://www.linkedin.com/in/julia-waehnert/) Love the vibe? There’s a whole community waiting for you. 🦋 Join the Social Butterfly Club and experience Berlin together: [https://socialbutterflyradar.substack.com/](https://socialbutterflyradar.substack.com/)

**Are you an angel investor or an institutional investor?** Join us for **Angels & Beers** — a relaxed, no-pitch evening dedicated to connecting current and future angel investors in the Berlin community. ​​ This edition is organised together with Start-Up investment Accelerator, Leapfunder, and Startups. Berlin. **RSVP on** - [https://luma.com/je99b04p](https://luma.com/je99b04p) **Flock and Startups. Berlin** is the largest startup network in Berlin. Powered by the [Flock](https://joinaflock.com/) team, it brings together founders and investors for bi-weekly networking events. ​​**Startup Investor Accelerator**, by Mossy Ventures, helps build stronger, more investable startups while growing the next generation of angel investors within local ecosystems through hands-on learning and real investment experience. Their 3-month program brings together aspiring investors to evaluate real startups, conduct due diligence, and make a group investment, all while gaining practical insights into early-stage investing. ​​**Leapfunder** is a European platform that connects startups with early-stage angel investors through a simple, standardized investment structure. It allows investors to easily diversify their portfolio, support promising startups from the ground up, and benefit from improved access, transparency, and seamless cross-border investing across Europe. ​​​ This gathering is **exclusively for individuals who are actively investing in startups**. Whether you're just getting started or already have a portfolio, it's a chance to share experiences, exchange insights, and grow your network — all in an informal setting over a drink. ​​​Not sure if you fit the profile? Reach out — or drop by and let's talk. **Please note: this is for investors only, and you must RSVP on** [https://luma.com/je99b04p](https://luma.com/je99b04p)

The longest day of the year is comming and let's another Kotlin meetup. This time we geather at N26! **⚠️⚠️⚠️ Due to a venue policy please submit the following form for additional details. Without it, you won't be allowed inside the venue:** https://forms.gle/XjqVXkD3FARCM6jA8 **Line-Up:** 👉 **TestBalloon: Kotlin testing is easier (and more fun) than you think** *by Oliver Okrongli* You want an easier way to write tests? Parameterize tests in plain Kotlin? Reuse a series of tests? Easily extend own your test setup? Have first-class support on all platforms? All without struggling with a huge framework API? TestBalloon is a new test framework that brings the power of Kotlin to your test setup. With a small-surface API, a hierarchical test structure and an extensible DSL, TestBalloon makes Kotlin testing easy, even at scale. Oliver, the author of TestBalloon, will show testing patterns and strategies and lots of practical examples, ranging from simple unit tests with less boilerplate to advanced testing with coroutines and generated data. This talk is based on insights first presented at KotlinConf 2026 in Munich. At the end of this talk, you’ll be able to firmly the answer the question: "How can I master Kotlin testing with ease, and make my team release with joy and confidence, every time?" 👉 **One Topic to Rule 'Em All** *by Yonatan Karp-Rudin* Kafka delivered every event exactly once, in order, and lost nothing. So what broke? This talk follows that question into the gap most event-driven systems leave open: what actually guarantees the order your domain depends on, and what quietly doesn't. We start from a real log line, find the crack in an architecture that looks clean and ships fast, and rule out the fix everyone reaches for first. The cure turns out to be one sentence of domain thinking plus one line of config, though the Schema Registry will fight you on the way there. A live demo runs the bug and the fix back to back: same load, same hero, one change. If you build with Kafka, you have probably shipped a version of this bug. You will leave able to spot it and fix it before it pages someone. 👉 **TBD** **Speaker Bios:** 🗣 Oliver Okrongli Oliver has been shaping and creating software from backend to frontends. He is the author of TestBalloon, a next-generation Kotlin test framework. Before, he has helped to maintain Kotest, and contributed to several libraries of the Kotlin ecosystem as well as the Kotlin compiler. Can be found on GitHub (OliverO2) and the kotlinlang Slack (Oliver O). When not developing, he is most probably in deep talks, dancing, snowboarding or F18 catamaran sailing whenever he gets a chance. 🗣 Yonatan Karp-Rudin Yonatan Karp-Rudin is a Staff Engineer at Billie, building event-driven systems in Kotlin and Spring Boot. Off the clock, he plays with AI agents and builds random tooling, trying to hand off as much of his own workflow to a machine as he can. The rest of the time he's brewing mead or deep in a video game. **🗣 TBD**

At OpenSpace Networthing entrepreneurs from diverse disciplines, industries and nations meet to collaboratively develop solutions for challenges presented by participants. This month we will dive deeper into building digital products with Vibe Coding & AI with Varun Jain. We are building a networking-App: The "Tinder for Entrepreneurs" If you want to offer a workshop or present a topic for our members, write an email to alejandro.wagner@mlp.de Entrance is free! Bring in your expertise instead.

We are happy to invite you to our next iOS meetup. This time we cooperate with the amazing 42 Berlin to share the knowledge and experience in iOS development. 18:00 Doors open 18:30 Welcome on campus **18:45** **— Sebastian Hagedorn, director of Engineering at Clue, presents "The Sensitive App".** Is your app really working, or just not crashing? “The Sensitive App” reports subtle bugs regardless of origin, and validates your assumptions in production so you don’t have to resort to guessing or praying. Learn how to turn your app into the first line of defense for your entire system’s health! **19:45** **— Dmitry Kurkin, lead Mobile Engineer at SuperNext, presents "Lessons that iOS Native Project could learn from ReactNative in agentic development".** We'll inspect the components of the React Native engine that provide faster feedback and boost agentic iterations.

**Es sind alle willkommen! Wir treffen uns am 19.06. um 19:00 im Biergarten Eiswerder für einen entspannten Abend. Ich freue mich auf euch!** Wenn du neu in der Gruppe bist, lies dir bitte unsere Haupt-Gruppenseite durch. Danke! Wir möchten eine Gemeinschaft gründen, in der Menschen sich treffen, austauschen und gemeinsam neue Erfahrungen machen. Unser Ziel ist es, eine offene und fröhliche Atmosphäre zu schaffen, in der neue Bekanntschaften entstehen und interessante Gespräche geführt werden können. Bist du neu in Spandau und hast noch nicht richtig Anschluss gefunden? Lebst du schon länger in Spandau und möchtest nicht immer nach Mitte fahren, um Neues zu erleben? Wenn du Lust hast, Teil dieser Gemeinschaft zu werden und gemeinsam schöne Momente zu erleben, bist du herzlich eingeladen, dich uns anzuschließen! Wir freuen uns auf dich! :) \-\-\- **EN** \-\-\- **Everyone is welcome! We are meeting on the 19th of June starting from 7 pm at the Biergarten Eiswerder for a relaxed evening. Hope to see you soon!** If you are new in this group, please read our main group page. Thank you! We want to create a community where people can meet, exchange ideas and share new experiences. Our aim is to create an open and friendly atmosphere where you can find new friends and have interesting conversations. Are you new to Spandau and haven't really found your place yet? Have you been living in Spandau for a while and don't always want to travel to Mitte to experience something new? If you would like to become part of this community and experience some great moments together, you are welcome to join us! We are happy to see you soon! :)

The Creative Code Jam is a monthly gathering of artists, makers, designers, illustrators, coders, musicians, performers, learners and anyone interested in the use of computing skills for artistic expression. The event is free and open to all, regardless of age, origin, gender or experience. The jam is an opportunity to meet likeminded people and get creative together in a relaxed and safe environment. Beginners and first-timers should feel especially welcome! WHAT SHOULD I EXPECT? **Bring a laptop** and/or anything you’d like to work on, whether it’s a personal project, an experiment, or a skill you want to learn. You can come with friends or meet new people here. There’s no set agenda: some people code, some sketch ideas, some collaborate, and others just chat and get inspired. SCHEDULE Doors open at noon, then we’ll have quick introductions so everyone can share what they’re planning to work on. Note: arriving on time is the best way to hear what others are up to ;) Around 6 pm, we gather to share what we’ve worked on during the day. BEGINNERS WELCOME! If you’re new to creative coding, we'll be happy to help you get started, and you can find beginner-friendly resources at [creativecode.berlin/learn](http://creativecode.berlin/learn). THIS IS YOUR SPACE We do our best to create a welcoming environment for all people regardless of race, ethnicity, color, religion, gender identity, sexual orientation, national origin, age, disability, or genetics. People from group generally underrepresented in open-source, art, and technology fields are warmly encouraged to come by. And if you know someone who might enjoy this meetup but isn’t sure it’s for them, let them know they’ll be welcome! SAFE SPACE POLICY We support the Berlin Code of Conduct: https://berlincodeofconduct.org/ Please make sure you agree with its content. ABOUT MotionLab.Berlin MotionLab.Berlin is Germany’s premier Innovation Hub & Makerspace – an ecosystem for Hardtech, art, creativity, and entrepreneurship. They are an international community with access to state-of-the-art machinery, prototyping machines, coworking spaces, offices, and production facilities. More info: https://motionlab.berlin/ ACCESSIBILITY MotionLab is located on the ground floor, with bathrooms on that same level, although unfortunately they are too small for wheelchairs. FOOD MotionLab has drinks and snacks for sale. Bio food can be found on LPG at Bouchéstr (\~200m). Their cantine has vegan, vegetarian and other food options until 8pm. DO I NEED TO SPEAK GERMAN? We speak mostly English so international guests are more than welcome! Our team also speaks French, Turkish, Italian, Spanish, Dutch, Finnish and German... though language availability may vary depending on which organizers are present :) CONTACT Raphaël de Courville team@creativecode.berlin +49 176 700 70572 or get in touch via [creativecode.berlin](https://creativecode.berlin/)

Please reserve your spot by registering on the below link : https://www.eventbrite.com/e/join-biggest-community-investors-founders-berlin-online-tickets-1988380688164?aff=meetup QUESTIONS ? Pls Reach out to; Rose - +971528033410 ( WhatsApp Only)

➡️ Join us on Telegram: [https://t.me/+1k8nWt2bM7FlZTFi](https://t.me/+1k8nWt2bM7FlZTFi) **Relax. Connect. Create. ☕** After a full week of work, meetings, study sessions and life in fast-forward, it’s time to slow down. Join us this Saturday afternoon in Berlin for a relaxed coffee hang-out where this week's agenda is good company & warm drinks. You're also invited to bring some boardgames, drawing/coloring materials (I will bring an adult coloring book) **What’s the plan?** We’ll meet in a cosy spot, draw, chat about everything and nothing, swap stories and simply enjoy the moment. No pressure. No formalities. Just a bunch of friendly people sharing a Saturday coffee. **Who’s welcome?** Everyone! Whether you’re a Berliner born and raised, newly arrived in the city, from Germany or abroad, if you like meeting open-minded folks and spending some relaxed time—come join us. **When & how?** Saturday afternoon. Detailed time and place in our Telegram group. Hop in, say hello, and we’ll share the final details. **Why join?** \*Because you deserve a break. * Because you enjoy being creative. \*Because you enjoy boardgames * Because meeting new people sparks fresh energy. \*Because coffee tastes even better when shared. * Because Saturday afternoons were made for this. Respect and Safety: There is always at least one organizer present at every meetup. If you ever feel unsafe or bothered by someone’s behavior, you can reach out to an organizer privately. Your identity will remain confidential, your concern will be taken seriously, and no inappropriate behavior is tolerated — anyone making others feel uncomfortable will be removed from the group immediately. We hope to see you there. Bring yourself, your smile, drawing materials, your stories—or just your comfy self. Let’s make Saturday a little more laid-back, a little more social and a lot more nice. See you soon! —Your Saturday Creative Coffee Crew ☕

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

Welcome to Drunken Philosophy, a casual, curious, social discussion club. Come grab a drink and a seat at The Oracle. **Optional topic for this meetup: Where is everybody?** In 1950 the physicist Enrico Fermi was talking about aliens over lunch and asked a question that still has not gone away: if the universe is so vast and so old, and even a fraction of those billions of stars have planets, where is everyone? By the numbers the galaxy should be crowded with civilizations. Instead we look up and hear silence. That gap between "they should be everywhere" and "we see no one" is the Fermi Paradox. One of the most unsettling answers is the idea of a **Great Filter**: somewhere on the road from dead chemistry to a galaxy-spanning civilization, there is at least one step that is almost impossible to get past. Maybe the filter is behind us. Maybe life starting at all, or simple cells becoming complex, or intelligence ever evolving, is the freak accident, and we already cleared the hard part. Or maybe the filter is ahead of us, and advanced civilizations reliably wipe themselves out before they spread. Here is the part that messes with people. If we ever found life somewhere else, even pond scum on Mars, most people would call it the greatest discovery in history. But it might be the worst possible news. It would mean life is common, the early steps are easy, and the hard step is still in front of us. So the eerie silence overhead might actually be the best sign we could ask for. **Questions to wrestle with:** * Is it better to be alone? Would you rather we find alien life and learn we are not special, or find nothing and quietly improve our odds of surviving? * Where do you bet the filter sits, behind us or ahead of us, and why? * If it is ahead of us, what is it? Nuclear war, climate collapse, AI, something we cannot even picture yet? And can we do anything about a filter we cannot see coming? * Does any of this change how you live, or how humanity should be spending its time and money right now? As always the prompt is optional. Come for the conversation, stay for the drinks, and bring your own questions.

We are a real world Martial arts group. \ Called DO JUNG ISHU (the art of fighting) \ Based off of Jeet kune do we just continued where Bruce Lee left off. \ We have been around a while. \ Every week we get together and work technical skills and full contact spar. \ Almost all of the instructors have been in everything from street fights to the ring and some still compete in cage fighting. \ If you want to take your skills up, improve your confidence, gain self defense skills, get in better shape, test yourself or just want to kill some time and possibly get hit a bit come on down. \ We will be located at 3923 N High St, Columbus, OH 43214 Outside in the grass between the playground and horseshoe area. our instructors are normally in a black and red art of fighting shirt \ if you can not find us call or text me at 6143570295 Saturday 1:30pm Wednesday 5:45pm From Age 16 and up. attendees under the age of 18 must have a guardian with them. \ Wear workout clothes. \ Bring a MOUTHPIECE! \ WE HAVE GLOVES. \ $10 per class $5 per class if you are wearing a club shirt Club shirts are $25 Hope to see you soon. \ let me know if you have any questions :)

We're going to GameArena! We'll be in-person at the GameArena Gateway for our monthly COGG Prototype and Play event. Come to play and showcase your games! We're back in the upper levels of the catwalk area. It'll be packed with lots of camaraderie playing your game(s) and other's games on the 2nd floor. Light snacks and water provided but you can buy food and drinks at the bar (alcoholic drink ID required). [www.game-arena.co](http://www.game-arena.co/) **Attendees:** Don't have a game to show? Not a problem! All are welcomed and invited from all ages and backgrounds. The more we can have to play test our games is all the better! **Developers:** Do you have a game that you would like to get critical feedback on? Would you like an excuse to work on a game with other talented artists, programmers, musicians, designers, and writers? Digital, table-top, non-experienced developers, and the like are welcomed! We'll provide signage for your game to help others learn more about your work. Wifi, outlets, tables, and seats (though standing tables also) are available. Come to the Prototype and Play workshop to collaborate and meet local game developers for an evening of epic and raw game play fun! Play works-in-progress, show off your own game, work with others to add polish to a game, or even lend your talents to other fellow developers. For this event, light snacks from the bar and water will be provided! Though you can purchase you own if you like at the bar: [https://www.game-arena.co/menu](https://www.game-arena.co/menu) Can use South Garage at the Gateway with a $5 voucher on your way out. 75 E 11th Ave, Columbus, OH 43201 [https://maps.app.goo.gl/UwgveUYG37Jy7RtS9](https://maps.app.goo.gl/UwgveUYG37Jy7RtS9) If you have any questions or comments, as always, feel free to reach out to us at [info@thecogg.com!](http://info@thecogg.com!/)

While some are still meeting online, this is an in person event. Please note that we have attendees of all levels of speaking, including some native speakers. All are welcome! Also, as we meet at the same time and place each week, many don’t RSVP on the app, so we will likely have more attendees than noted here. Note: if you are asked to pay and upgrade the Meetup app, this is not necessary. You can ignore this and still attend our meetings. Find us on our [Facebook group](https://www.facebook.com/share/g/1EKw86WJCp/?mibextid=wwXIfr).

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).