code: def make_model(cls):
      with pm.Model() as model:
          a = pm.StudentT("a", nu=4, mu=0, sigma=1)
      return model
  
imports: import arviz
  import numpy
  import numpy.testing
  import pytensor.tensor
  from scipy import stats
  import pymc
  from pymc.backends.arviz import to_inference_data
  from pymc.util import get_var_name
label_desc: Use image node_id 1 for calling the StudentTFixture obj's underlying member method code with example usage: obj.make_model(cls) and returns: model