code: def add_appt(self, complex: str, house: str, price: str, square: str, **kwargs):
          
          self.check_house(complex, house)
  
          kwargs['price'] = self._format_decimal(price)
          kwargs['square'] = self._format_decimal(square)
  
          self.post('developers/{developer}/complexes/{complex}/houses/{house}/appts/'.format(
              developer=self.developer,
              complex=complex,
              house=house,
          ), data=kwargs)
docs: Add a new appartment to the rumetr db