code: def repr_str(self, x, level):
      s = builtins.repr(x[: self.maxstring])
      if len(s) > self.maxstring:
          i = max(0, (self.maxstring - 3) // 2)
          j = max(0, self.maxstring - 3 - i)
          s = builtins.repr(x[:i] + x[len(x) - j :])
          s = s[:i] + self.fillvalue + s[len(s) - j :]
      return s
  
file_path: catboost/contrib/tools/python3/src/Lib/reprlib.py
imports: import builtins
  from itertools import islice
  from _thread import get_ident
label_desc: Use image node_id 12 for calling the Repr obj's underlying member method code with example usage: obj.repr_str(x, level) and returns: s