code: def _create_variables(self, device, dtype):
      return ivy.Container(
          x=self._linear0.v, y=self._linear1.v, z=self._linear2.v
      )
  
imports: import os
  from hypothesis import given, strategies
  import numpy
  import ivy
  from ivy.functional.ivy.gradients import _variable
  import ivy_tests.test_ivy.helpers
label_desc: Use image node_id 2 for calling the WithCustomVarStructure obj's underlying member method code with example usage: obj._create_variables(device, dtype) and returns: ivy