input: 
  def import_properties(fixture_file: str, fixture_folder: str, base_path: str) -> int:
      """ Load a JSON fixture file, extract properties, create Property objects, and save them to the database.
      The input JSON file should have a key named "properties" containing a list of property objects.
      Returns the number of Property objects saved to the database.
      
      >>> import_properties('properties.json', 'models/fixtures', os.getcwd())
      5
      >>> import_properties('empty.json', 'models/fixtures', os.getcwd())
      0
      """
      properties_to_save = []
      path = os.path.sep.join([base_path, 'app', fixture_folder, fixture_file])
      with open(path) as file_:
          data = json.load(file_)
      properties = data['properties']
      for property_ in properties:
          property_.pop('id', None)
          properties_to_save.append(Property(**property_))
      Property.objects.insert(properties_to_save)
      return len(properties_to_save)
  
output:     import os
      import json
      from app.models import Property