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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 use_edns(self, edns, ednsflags, payload):
 """Configure Edns. @param edns: The EDNS level to use. The default is -1, no Edns. @type edns: int @param ednsflags: The EDNS flags @type ednsflags: int @param payload: The EDNS payload size. The default is 0. @type payload: int"""


        if edns is None:
            edns = -1
        self.edns = edns
        self.ednsflags = ednsflags
        self.payload = payload