code: def test_string_overrides_work(self):
      with pm.Model() as pmodel:
          A = pm.Flat("A", initval=10)
          B = pm.HalfFlat("B", initval=10)
          C = pm.HalfFlat("C", initval=10)
  
      fn = make_initial_point_fn(
          model=pmodel,
          jitter_rvs={},
          return_transformed=True,
          overrides={
              "A": 1,
              "B": 1,
              "C_log__": 0,
          },
      )
      iv = fn(0)
      assert iv["A"] == 1
      assert np.isclose(iv["B_log__"], 0)
      assert iv["C_log__"] == 0
  
imports: import cloudpickle
  import numpy
  import pytensor
  import pytensor.tensor
  import pytest
  from pytensor.tensor.random.op import RandomVariable
  import pymc
  from pymc.distributions.distribution import moment
  from pymc.initial_point import make_initial_point_fn, make_initial_point_fns_per_chain
label_desc: Use image node_id 9 for calling the TestInitvalEvaluation obj's underlying member method code with example usage: obj.test_string_overrides_work() without return types