code: def error_leaf(self):
      return self.args[0]
  
imports: import re
  from collections import namedtuple
  from textwrap import dedent
  from parso.python.parser import Parser
  from parso.python import tree
  from jedi._compatibility import u
  from jedi.evaluate.syntax_tree import eval_atom
  from jedi.evaluate.helpers import evaluate_call_of_leaf
  from jedi.evaluate.compiled import get_string_context_set
  from jedi.cache import call_signature_time_cache
label_desc: Use image node_id 1 for calling the OnErrorLeaf obj's underlying member method code with example usage: obj.error_leaf() and returns: self