docstr: Save the font. The 'file' argument can be either a pathname or a
  writable file object.
code: def save(self, file):
      """Save the font. The 'file' argument can be either a pathname or a
      writable file object.
      """
      self.font.save(file)
  
imports: from .ttLib import TTFont, newTable
  from .ttLib.tables._c_m_a_p import cmap_classes
  from .ttLib.tables._g_l_y_f import flagCubic
  from .ttLib.tables.O_S_2f_2 import Panose
  from .misc.timeTools import timestampNow
  import struct
  from collections import OrderedDict
label_desc: Use image node_id 2 for calling the FontBuilder obj's underlying member method code with example usage: obj.save(file) without return types