def launch_set(nickname_substr)
      set = select_set(nickname_substr)  
      set.each { |s|
        begin
          object_behavior(s, :start)
        rescue Exception => e
          raise e unless e.message =~ /AlreadyLaunchedError/
        end
      }
    end
def launch_set(nickname_substr)
      set = select_set(nickname_substr)  
      set.each { |s|
        begin
          object_behavior(s, :start)
        rescue Exception => e
          raise e unless e.message =~ /AlreadyLaunchedError/
        end
      }
    end
Launch server(s) that match nickname_substr
 * nickname_substr<~String> - regex compatible string to match