class_docstr: : A matplotlib converter class.  Provides matplotlib conversion
       functionality for string data values.
  
  Valid units for string are:
  - 'indexed' : Values are indexed as they are specified for plotting.
  - 'sorted'  : Values are sorted alphanumerically.
  - 'inverted' : Values are inverted so that the first value is on top.
  - 'sorted-inverted' :  A combination of 'sorted' and 'inverted'
docstr: : Returns information on how to handle an axis that has string data.
  
  = INPUT VARIABLES
  - axis    The axis using this converter.
  - unit    The units to use for a axis with string data.
  
  = RETURN VALUE
  - Returns a matplotlib AxisInfo data structure that contains
    minor/major formatters, major/minor locators, and default
    label information.
code: def axisinfo(unit, axis):
      """: Returns information on how to handle an axis that has string data.
  
      = INPUT VARIABLES
      - axis    The axis using this converter.
      - unit    The units to use for a axis with string data.
  
      = RETURN VALUE
      - Returns a matplotlib AxisInfo data structure that contains
        minor/major formatters, major/minor locators, and default
        label information.
      """
  
      return None
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/testing/jpl_units/StrConverter.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import xrange
  import matplotlib.units
  from matplotlib.cbook import iterable
label_desc: Use image node_id 1 for calling the StrConverter obj's underlying member method code with example usage: obj.axisinfo(unit, axis) and returns: None