code: def demo_first_value_nan() -> hip.Experiment:
      return hip.Experiment.from_iterable(
          [
              {},
              {"a": None},
              {"a": 2},
              {"a": 2.1},
              {"a": 2.2},
              {"a": 5.5},
              {"a": math.nan},
          ]
      )
  
imports: import uuid
  import random
  import math
  import time
  import typing
  from .None import experiment
label_desc: Use image node_id 18 for calling a global function with example usage: demo_first_value_nan() and returns: hip