code: def start_pos(self):
      return self._lambda_context.tree_node.start_pos
  
imports: from parso.python import tree
  from jedi._compatibility import use_metaclass
  from jedi import debug
  from jedi.evaluate.cache import evaluator_method_cache, CachedMetaClass
  from jedi.evaluate import compiled
  from jedi.evaluate import recursion
  from jedi.evaluate import docstrings
  from jedi.evaluate import pep0484
  from jedi.evaluate import flow_analysis
  from jedi.evaluate import helpers
  from jedi.evaluate.arguments import AnonymousArguments
  from jedi.evaluate.filters import ParserTreeFilter, FunctionExecutionFilter, ContextName, AbstractNameDefinition, ParamName
  from jedi.evaluate.base_context import ContextualizedNode, NO_CONTEXTS, ContextSet, TreeContext
  from jedi.evaluate.lazy_context import LazyKnownContexts, LazyKnownContext, LazyTreeContext
  from jedi.evaluate.context import iterable
  from jedi.evaluate.context import asynchronous
  from jedi import parser_utils
  from jedi.evaluate.parser_cache import get_yield_exprs
label_desc: Use image node_id 2 for calling the LambdaName obj's underlying member method code with example usage: obj.start_pos() and returns: self