code: def set_params():
      params = {
          "missing_values_handling": "MeanImputation",
          "family": "negativebinomial",
          "theta": 0.01,
          "link": "log",
          "alpha": 0.5,
          "Lambda": 0,
          "gam_columns": ["PSA"],
          "num_knots": [5],
      }
      print(params)
      return params
  
imports: import sys
  import h2o
  from tests import pyunit_utils
  import os
  import tempfile
label_desc: Use image node_id 2 for calling a global function with example usage: set_params() and returns: params