class_docstr: A simple count down timer implementation.
docstr: Returns the remaining countdown seconds.
docstr_tok: ["Returns","the","remaining","countdown","seconds","."]
code: def secs_remaining(self):
      """Returns the remaining countdown seconds."""
  
      diff = self._duration_secs - (time.time() - self._start_time_secs)
      return max(0.0, diff)
  
file_path: adanet/adanet/core/timer.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import time
label_desc: Use image node_id 2 for calling the _CountDownTimer obj's underlying member method code with example usage: obj.secs_remaining() and returns: max