code: def unix_time_since_start(self, in_seconds=True):
      gap = time.time() * 1000 - self.start
  
      if in_seconds:
          gap = gap // 1000
  
      # Prevent 0 division errors
      if gap == 0:
          gap = 1
      return gap
  
imports: import time
label_desc: Use image node_id 5 for calling the Timer obj's underlying member method code with example usage: obj.unix_time_since_start(in_seconds) and returns: gap