code: def close_model(self):
      if self.write_file is not None:
          if self.write_file.open:
              self.write_file.close()
  
imports: import csv
  from deepneuro.models.cost_functions import cost_function_dict
  from deepneuro.utilities.util import add_parameter, nifti_splitext
  from deepneuro.load.load import load
label_desc: Use image node_id 12 for calling the DeepNeuroModel obj's underlying member method code with example usage: obj.close_model() without return types