code: def test_relationship_path(es):
      value = IdentityFeature(es["log"].ww["value"])
      assert len(value.relationship_path) == 0
  
imports: from featuretools import IdentityFeature
  from featuretools.primitives.utils import PrimitivesDeserializer
label_desc: Use image node_id 1 for calling a global function with example usage: test_relationship_path(es) without return types