code: def repulsive_part_grad(self):
      t = self.approx.symbolic_normalizing_constant
      dxkxy = self.dxkxy
      return dxkxy / t
  
file_path: pymc/pymc/variational/stein.py
imports: import pytensor.tensor
  from pytensor.graph.replace import graph_replace
  from pymc.pytensorf import floatX
  from pymc.util import WithMemoization, locally_cachedmethod
  from pymc.variational.opvi import node_property
  from pymc.variational.test_functions import rbf
label_desc: Use image node_id 7 for calling the Stein obj's underlying member method code with example usage: obj.repulsive_part_grad() and returns: unknown