class_docstr: Error raised when product with given key was not found on the server
class_docstr_tok: ["Error","raised","when","product","with","given","key","was","not","found","on","the","server"]
code: def __str__(self):
      return self.msg
  
label_desc: Use image node_id 2 for calling the InvalidKeyError obj's underlying member method code with example usage: obj.__str__() and returns: self