@property
    def prefix(self):
        if self.name:
            return self.name+':'
        else:
            return ''
Determine whether the registry key exists or not.
dataset/ETHPy150Open SmartTeleMax/iktomi/iktomi/forms/form.py/Form.prefix--crossover with--dataset/ETHPy150Open tjguk/winsys/winsys/registry.py/Registry.__nonzero__