code: def buildVarDevTable(varIdx):
      self = ot.Device()
      self.DeltaFormat = 0x8000
      self.StartSize = varIdx >> 16
      self.EndSize = varIdx & 0xFFFF
      return self
  
file_path: catboost/contrib/python/fonttools/fontTools/varLib/builder.py
imports: from fontTools import ttLib
  from fontTools.ttLib.tables import otTables
label_desc: Use image node_id 12 for calling a global function with example usage: buildVarDevTable(varIdx) and returns: self