code: def resources(self):
      return Resources(num_wires=self.num_wires, depth=3)
  
imports: import io
  import contextlib
  import numpy
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.resource import ResourcesOperation, Resources
  from pennylane.circuit_graph import CircuitGraph
  from pennylane.wires import Wires
label_desc: Use image node_id 1 for calling the CustomOpDepth3 obj's underlying member method code with example usage: obj.resources() and returns: Resources