code: def canAttendMeetings(self, intervals):
      intervals.sort(key=lambda x: x.start)
      ls = len(intervals)
      for i in range(ls - 1):
          if intervals[i].end > intervals[i + 1].start:
              return False
      return True
  
label_desc: Use image node_id 1 for calling the Solution obj's underlying member method code with example usage: obj.canAttendMeetings(intervals) and returns: True, False