code: def test_jordan_wigner_for_identity_ps():
      """Test that the jordan_wigner function returns the correct PauliSentence for Identity when ps=True."""
      assert jordan_wigner(FermiWord({}), ps=True) == PauliSentence(
          {PauliWord({0: "I"}): 1.0 + 0.0j}
      )
  
imports: import pytest
  import pennylane
  from pennylane.ops import SProd, Identity
  from pennylane.pauli.conversion import pauli_sentence
  from pennylane.fermi.conversion import jordan_wigner
  from pennylane.pauli import PauliWord, PauliSentence
  from pennylane.fermi.fermionic import FermiWord, FermiSentence
label_desc: Use image node_id 4 for calling a global function with example usage: test_jordan_wigner_for_identity_ps() without return types