code: def test_fetch_hops(self):
      assert LOCAL_KG.fetch_hops(Vertex(f"{URL}#Alice")) == []
  
imports: import numpy
  import pytest
  from pyrdf2vec.graphs import KG, Vertex
label_desc: Use image node_id 4 for calling the TestKG obj's underlying member method code with example usage: obj.test_fetch_hops() without return types