code: def on_balance_volume(close, volume, fillna=False):
      """On-balance volume (OBV)
  
      It relates price and volume in the stock market. OBV is based on a
      cumulative total volume.
  
      https://en.wikipedia.org/wiki/On-balance_volume
  
      Args:
          close(pandas.Series): dataset 'Close' column.
          volume(pandas.Series): dataset 'Volume' column.
          fillna(bool): if True, fill nan values.
  
      Returns:
          pandas.Series: New feature generated.
      """
      return OnBalanceVolumeIndicator(
          close=close, volume=volume, fillna=fillna
      ).on_balance_volume()
  
imports: import typing
  import numpy
  import pandas
  from ta.utils import IndicatorMixin, _ema
label_desc: Use image node_id 2 for calling a global function with example usage: on_balance_volume(close, volume, fillna) and returns: OnBalanceVolumeIndicator