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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_sql_task_cost(self):
 """ Get cost information of the sql task. Including input data size, number of UDF, Complexity of the sql task :return: cost info in dict format """

        resp = self.get_task_result(self.get_task_names()[0])
        cost = json.loads(resp)
        sql_cost = cost['Cost']['SQL']

        udf_num = sql_cost.get('UDF')
        complexity = sql_cost.get('Complexity')
        input_size = sql_cost.get('Input')
        return Instance.SQLCost(udf_num, complexity, input_size)