docstr: Return the kerning pair distance (possibly 0) for chars
  *name1* and *name2*.
code: def get_kern_dist_from_name(self, name1, name2):
      """
      Return the kerning pair distance (possibly 0) for chars
      *name1* and *name2*.
      """
      return self._kern.get((name1, name2), 0)
  
imports: from collections import namedtuple
  import logging
  import re
  from ._mathtext_data import uni2type1
label_desc: Use image node_id 11 for calling the AFM obj's underlying member method code with example usage: obj.get_kern_dist_from_name(name1, name2) and returns: self