Please summarize following information about Maria Astashkina.

Sure, here is a summary of Maria Astashkina:
Born on April 5, 1999, in Penza, Russia, Maria Astashkina is a Russian swimmer who took home four gold medals from the 2015 European Games in the 200 m, 100 m, 50 m breaststroke, and four 100 m medley events. She participated in the 2014 FINA World Swimming Championships (25 m) in Doha, Qatar, as well as the 2014 European Junior Championships. She was chosen to compete at the first-ever 2015 European Games in Baku in June of that year, where she took home four gold medals and set a junior meet record in the 200-meter breaststroke. She lost in her opening-round heats at the 2015 World Championships in Kazan, which prevented her from making it through the quarterfinals. Despite taking home a bronze in the 200 m breaststroke in April 2016, she was unable to make the Olympics.