code: def mapMarkFilteringSets(self, markFilteringSetMap):
      for l in self.Lookup:
          if not l:
              continue
          l.mapMarkFilteringSets(markFilteringSetMap)
  
imports: from fontTools import ttLib
  from fontTools.ttLib.tables.DefaultTable import DefaultTable
  from fontTools.ttLib.tables import otTables
  from fontTools.merge.base import add_method, mergeObjects
  from fontTools.merge.util import *
  import logging
label_desc: Use image node_id 15 for calling a global function with example usage: mapMarkFilteringSets(markFilteringSetMap) without return types