message: API: Add FixtureUtils.getSimpleChatRoomSetup documentation
diff: @@ -151,6 +151,12 @@ export class FixtureUtils {
  return Unit.findById(unitId);
  }
  + /**
  + * Provides simple shared setup functionality currently used by multiple chat system unit tests.
  + *
  + * @param hash The optional RNG seed passed to FixtureUtils.getRandom for random course.chatRooms selection.
  + * @returns A random fixture course and one of its chatRooms, also randomly selected, in form of a roomId.
  + */
  public static async getSimpleChatRoomSetup(hash?: string) {
  const course = await FixtureUtils.getRandomCourse();
  const room = await FixtureUtils.getRandom<IChatRoom>(course.chatRooms, hash);
  