In ravendb what does the below statement does? using (var ds = new documentstore

Q The planet which is adjacent to earth:
Q What kind of information is stored in a control file?
Q What was most and least rewarding about your last position?
Q Can it be defined which header file to include at compile time?
Q What layer does the most filtering?
Q How to installation using subversion?
Q What do you think holds testers back to do automation? Is there a way to overcome it?
Q What are the plant-specific data in material?
Q What did all of these players win between 1995 and 1999: Jurgen Klinsmann, Eric Cantona, Gian Franco Zola, Dennis Bergkamp and David Ginola?
Q Whose birthday is observed as Panchayat Day?
Q In religious art, which Saint is associated with an ox