class_docstr: Module divides a histogram along first axis encountered, eg. time.
  
  For example, split histogram time:x:y along time axis.
  This will produce a data-frame summarizing the split information,
  where time is the index and each row is a x:y histogram.
code: def get_description(self) -> str:
      return ""
  
file_path: popmon/popmon/hist/hist_splitter.py
imports: import pandas
  from popmon.base import Module
  from popmon.hist.hist_utils import get_histogram, is_timestamp, split_hist_along_first_dimension
label_desc: Use image node_id 2 for calling the HistSplitter obj's underlying member method code with example usage: obj.get_description() and returns: str