docstr: Load time series.
  :param timeseries: a TimeSeries, a dictionary or a path to a csv file(str).
  :return TimeSeries: a TimeSeries object.
docstr_tok: ["Load","time","series",".",":","param","timeseries",":","a","TimeSeries",",","a","dictionary","or","a","path","to","a","csv","file","(","str",")",".",":","return","TimeSeries",":","a","TimeSeries","object","."]
code: def _load(self, metrix):
      """
      Load time series.
      :param timeseries: a TimeSeries, a dictionary or a path to a csv file(str).
      :return TimeSeries: a TimeSeries object.
      """
      if isinstance(metrix, TimeSeries):
          return metrix
      if isinstance(metrix, dict):
          return TimeSeries(metrix)
      return TimeSeries(utils.read_csv(metrix))
  
file_path: luminol/demo/src/rca.py
imports: from collections import defaultdict
  import os
  import sys
  from luminol import utils, exceptions
  from luminol.anomaly_detector import AnomalyDetector
  from luminol.correlator import Correlator
  from luminol.modules.correlation_result import CorrelationResult
  from luminol.modules.time_series import TimeSeries
label_desc: Use image node_id 2 for calling the RCA obj's underlying member method code with example usage: obj._load(metrix) and returns: TimeSeries, metrix, TimeSeries