docstr: The font family name, e.g., 'Times'.
code: def family_name(self):
      """The font family name, e.g., 'Times'."""
      return self.get_familyname()
  
imports: from collections import namedtuple
  import logging
  import re
  from ._mathtext_data import uni2type1
label_desc: Use image node_id 16 for calling the AFM obj's underlying member method code with example usage: obj.family_name() and returns: self