class_docstr: Tests for the ``Wires`` class.
docstr: Tests the ``subset()`` method.
code: def test_subset_method(self):
      """Tests the ``subset()`` method."""
  
      wires = Wires([4, 0, 1, 5, 6])
  
      assert wires.subset([2, 3, 0]) == Wires([1, 5, 4])
      assert wires.subset(1) == Wires([0])
      assert wires.subset([4, 5, 7], periodic_boundary=True) == Wires(
          [6, 4, 1]
      )
      # if index does not exist
      with pytest.raises(
          WireError, match="Cannot subset wire at index"
      ):
          wires.subset([10])
  
imports: import pytest
  import numpy
  import pennylane
  from pennylane.wires import Wires, WireError
label_desc: Use image node_id 27 for calling the TestWires obj's underlying member method code with example usage: obj.test_subset_method() without return types