docstr: Test that a transform can be applied to an instantiated operator
docstr_tok: ["Test","that","a","transform","can","be","applied","to","an","instantiated","operator"]
code: def test_instantiated_operator(self):
      """Test that a transform can be applied to an instantiated operator"""
  
      @qml.op_transform
      def my_transform(op, lower=False):
          return op.name.lower() if lower else op.name
  
      op = qml.RX(0.5, wires=0)
      res = my_transform(op, lower=True)
      assert res == "rx"
  
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.transforms.op_transforms import OperationTransformError
label_desc: Use image node_id 1 for calling the TestTransformParameters obj's underlying member method code with example usage: obj.test_instantiated_operator() and returns: unknown