docstr: Test the label method for the Identity Operator
docstr_tok: ["Test","the","label","method","for","the","Identity","Operator"]
code: def test_label_method(self, wires):
      """Test the label method for the Identity Operator"""
      assert Identity(wires=wires).label() == "I"
  
file_path: pennylane/tests/ops/test_identity.py
imports: import numpy
  import pytest
  import pennylane
  from pennylane import Identity
label_desc: Use image node_id 5 for calling the TestIdentity obj's underlying member method code with example usage: obj.test_label_method(wires) without return types