code: def make_lexer_(self, file_or_path):
      if hasattr(file_or_path, "read"):
          filename = getattr(file_or_path, "name", None)
          data = file_or_path.read()
      else:
          filename = file_or_path
          with open(file_or_path, "r") as f:
              data = f.read()
      self.lexer_ = Lexer(data, filename)
  
imports: import fontTools.voltLib.ast
  from fontTools.voltLib.lexer import Lexer
  from fontTools.voltLib.error import VoltLibError
  from io import open
label_desc: Use image node_id 2 for calling the Parser obj's underlying member method code with example usage: obj.make_lexer_(file_or_path) without return types