def hangup_all_calls(self):
        path = '/' + self.api_version + '/HangupAllCalls/'
        method = 'POST'
        return self.request(path, method)
Check that value of fieldname should be 'condition' val2
dataset/ETHPy150Open plivo/plivohelper-python/plivohelper.py/REST.hangup_all_calls--crossover with--dataset/ETHPy150Open frappe/frappe/frappe/model/document.py/Document.validate_value