code: def _parse_and_analyze(self, test_fn):
      # TODO(mdan): Use a custom FunctionTransformer here.
      node, source = parser.parse_entity(test_fn, future_features=())
      entity_info = transformer.EntityInfo(
          name=test_fn.__name__,
          source_code=source,
          source_file=None,
          future_features=(),
          namespace={},
      )
      node = qual_names.resolve(node)
      namer = naming.Namer({})
      ctx = transformer.Context(entity_info, namer, None)
      node = activity.resolve(node, ctx)
      return node, entity_info
  
imports: import unittest
  import gast
  from nvidia.dali._autograph.pyct import anno
  from nvidia.dali._autograph.pyct import naming
  from nvidia.dali._autograph.pyct import parser
  from nvidia.dali._autograph.pyct import qual_names
  from nvidia.dali._autograph.pyct import transformer
  from nvidia.dali._autograph.pyct.static_analysis import activity
  from nvidia.dali._autograph.pyct.static_analysis import annos
label_desc: Use image node_id 1 for calling the ActivityAnalyzerTestBase obj's underlying member method code with example usage: obj._parse_and_analyze(test_fn) and returns: node,  entity_info