code: def matern32(sigma, ell, input_dim=1):
      return sigma**2 * pm.gp.cov.Matern32(input_dim, ls=ell)
  
file_path: bambi/bambi/backend/utils.py
imports: import inspect
  from functools import partial
  import pytensor.tensor
  import pymc
label_desc: Use image node_id 7 for calling a global function with example usage: matern32(sigma, ell, input_dim) and returns: unknown