docstr: Test the decomposition of the identity operation.
docstr_tok: ["Test","the","decomposition","of","the","identity","operation","."]
code: def test_decomposition(self, wires):
      """Test the decomposition of the identity operation."""
  
      assert Identity.compute_decomposition(wires=wires) == []
      assert Identity(wires=wires).decomposition() == []
  
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 4 for calling the TestIdentity obj's underlying member method code with example usage: obj.test_decomposition(wires) without return types