class_docstr: Test the user interface of the op_transform, and ensure it applies
  and works well for all combinations of inputs and styles
docstr: Test that an exception is raised if the transform
  is applied to a multi-op quantum function, without
  the corresponding behaviour being registered
docstr_tok: ["Test","that","an","exception","is","raised","if","the","transform","is","applied","to","a","multi-op","quantum","function",",","without","the","corresponding","behaviour","being","registered"]
code: def test_multiple_operator_error(self):
      """Test that an exception is raised if the transform
      is applied to a multi-op quantum function, without
      the corresponding behaviour being registered"""
  
      @qml.op_transform
      def my_transform(op):
          return op.name
  
      @my_transform
      def multi_op_qfunc(x):
          qml.RX(x, wires=0)
          qml.RY(0.65, wires=1)
  
      with pytest.raises(
          OperationTransformError,
          match="transform does not support .+ multiple operations",
      ):
          multi_op_qfunc(1.5)
  
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.transforms.op_transforms import OperationTransformError
label_desc: Use image node_id 3 for calling the TestUI obj's underlying member method code with example usage: obj.test_multiple_operator_error() and returns: op