code: def loss(self, smts):
      try:
          import aquacrop
      except ImportError:
          raise UnsupportedExperiment(
              "Please install aquacrop==0.2 for FAO aquacrop experiments"
          )
      path = aquacrop.core.get_filepath("champion_climate.txt")
      wdf = aquacrop.core.prepare_weather(path)
  
      def run_model(smts, max_irr_season, year1, year2):
          """
          Function to run model and return results for given set of soil moisture targets.
          """
  
          maize = aquacrop.classes.CropClass(
              "Maize", PlantingDate="05/01"
          )  # define crop
          loam = aquacrop.classes.SoilClass("ClayLoam")  # define soil
          init_wc = aquacrop.classes.InitWCClass(
              wc_type="Pct", value=[70]
          )  # define initial soil water conditions
  
          irrmngt = aquacrop.classes.IrrMngtClass(
              IrrMethod=1, SMT=smts, MaxIrrSeason=max_irr_season
          )  # define irrigation management
  
          # create and run model
          model = aquacrop.core.AquaCropModel(
              f"{year1}/05/01",
              f"{year2}/10/31",
              wdf,
              loam,
              maize,
              IrrMngt=irrmngt,
              InitWC=init_wc,
          )
          model.initialize()
          model.step(till_termination=True)
          return model.Outputs.Final
  
      def evaluate(smts) -> float:  # ,max_irr_season,test=False):
          """
          Function to run model and calculate reward (yield) for given set of soil moisture targets
          """
          max_irr_season = self.max_irr_seasonal
          assert len(smts) == self.num_smts
          out = run_model(smts, max_irr_season, year1=2016, year2=2018)
          # get yields.
          reward = out["Yield (tonne/ha)"].mean()
          return -reward
  
      return evaluate(smts)
  
imports: from nevergrad.parametrization import parameter
  from ..base import ExperimentFunction
  from ..base import UnsupportedExperiment
label_desc: Use image node_id 2 for calling the NgAquacrop obj's underlying member method code with example usage: obj.loss(smts) and returns: evaluate, model, unknown