class_docstr: Provides Matplotlib conversion functionality for Monte Epoch and Duration
  classes.
docstr: Convert an Epoch value to a float suitable for plotting as a python
  datetime object.
  
  = INPUT VARIABLES
  - value    An Epoch or list of Epochs that need to be converted.
  - unit     The units to use for an axis with Epoch data.
  
  = RETURN VALUE
  - Returns the value parameter converted to floats.
code: def epoch2float(value, unit):
      """
      Convert an Epoch value to a float suitable for plotting as a python
      datetime object.
  
      = INPUT VARIABLES
      - value    An Epoch or list of Epochs that need to be converted.
      - unit     The units to use for an axis with Epoch data.
  
      = RETURN VALUE
      - Returns the value parameter converted to floats.
      """
      return value.julianDate(unit) - EpochConverter.jdRef
  
file_path: catboost/contrib/python/matplotlib/py3/matplotlib/testing/jpl_units/EpochConverter.py
imports: from matplotlib import cbook, units
  import matplotlib.dates
label_desc: Use image node_id 3 for calling the EpochConverter obj's underlying member method code with example usage: obj.epoch2float(value, unit) and returns: unknown