code: def get_probabilities(self, first_names):
      first_names_probs = first_names.to_frame().merge(
          p_race_given_first_name_df,
          left_on="first_name",
          right_index=True,
          how="left",
      )
      return first_names_probs
  
label_desc: Use image node_id 1 for calling the FirstNameModel obj's underlying member method code with example usage: obj.get_probabilities(first_names) and returns: first_names_probs