class_docstr: Merge rows whose timestamp are seconds apart
code: def __init__(self, time_interval, timestamp_column_name, mode=""):
      self.time_interval = time_interval
      self.timestamp_column_name = timestamp_column_name
      self.mode = mode
  
file_path: BigDL/python/chronos/src/bigdl/chronos/autots/deprecated/preprocessing/impute/impute.py
imports: from bigdl.chronos.autots.deprecated.preprocessing.impute.abstract import BaseImputation
  from bigdl.chronos.autots.deprecated.preprocessing.impute.LastFill import LastFill
  from bigdl.chronos.utils import deprecated
label_desc: Use image node_id 1 to create a new TimeMergeImputor object from inherited base classes: BaseImputation with example: obj = TimeMergeImputor(time_interval, timestamp_column_name, mode)