docstr: Return the latest timestamp in the time series.
docstr_tok: ["Return","the","latest","timestamp","in","the","time","series","."]
code: def end(self):
      """
      Return the latest timestamp in the time series.
      """
      return max(self.timestamps) if self.timestamps else None
  
imports: import numpy
label_desc: Use image node_id 3 for calling the TimeSeries obj's underlying member method code with example usage: obj.end() and returns: unknown