code: def baseline_white_3d():
      return {
          "value": "white",
          "arr": np.random.uniform(0, 1, size=(128, 64, 32)),
      }
  
imports: import pytest
  from pytest_lazyfixture import lazy_fixture
  from quantus.helpers.utils import *
label_desc: Use image node_id 7 for calling a global function with example usage: baseline_white_3d() and returns: dict