code: public static MiningModel getMiningModel(PMML pmml) {
          for (Model model : pmml.getModels()) {
              if (model instanceof MiningModel) {
                  return (MiningModel) model;
              }
          }
  
          throw new RuntimeException("PMML MiningModel not found.");
      }
docs: Retrieves the {@link org.dmg.pmml.MiningModel PMML MiningModel} element in a {@link org.dmg.pmml.PMML}.
  
  @param pmml The {@link org.dmg.pmml.PMML} from which to retrieve the {@link org.dmg.pmml.MiningModel PMML MiningModel}.
  @return A {@link org.dmg.pmml.MiningModel PMML MiningModel}.