class_docstr: Provides Matplotlib conversion functionality for Monte Epoch and Duration
  classes.
docstr: Convert a Matplotlib floating-point date into an Epoch of the specified
  units.
  
  = INPUT VARIABLES
  - value     The Matplotlib floating-point date.
  - unit      The unit system to use for the Epoch.
  
  = RETURN VALUE
  - Returns the value converted to an Epoch in the specified time system.
code: def float2epoch(value, unit):
      """
      Convert a Matplotlib floating-point date into an Epoch of the specified
      units.
  
      = INPUT VARIABLES
      - value     The Matplotlib floating-point date.
      - unit      The unit system to use for the Epoch.
  
      = RETURN VALUE
      - Returns the value converted to an Epoch in the specified time system.
      """
      # Delay-load due to circular dependencies.
      import matplotlib.testing.jpl_units as U
  
      secPastRef = value * 86400.0 * U.UnitDbl(1.0, "sec")
      return U.Epoch(unit, secPastRef, 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 2 for calling the EpochConverter obj's underlying member method code with example usage: obj.float2epoch(value, unit) and returns: U