class_docstr: Exception raised when a sample is invalid.
class_docstr_tok: ["Exception","raised","when","a","sample","is","invalid","."]
code: def __str__(self) -> str:
      if self.paths:
          return (
              self.msg
              + " (path:"
              + " -> ".join(map(str, self.paths))
              + ")"
          )
      else:
          return self.msg
  
file_path: nni/nni/mutable/exception.py
imports: from __future__ import annotations
  from typing import overload
label_desc: Use image node_id 2 for calling the SampleValidationError obj's underlying member method code with example usage: obj.__str__() and returns: unknown, self