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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 add_member(self, urls):
 """ Add a member into the cluster. :returns: new member :rtype: :class:`.Member` """

        member_add_request = etcdrpc.MemberAddRequest(peerURLs=urls)

        member_add_response = self.clusterstub.MemberAdd(
            member_add_request,
            self.timeout,
            credentials=self.call_credentials,
            metadata=self.metadata
        )

        member = member_add_response.member
        return etcd3.members.Member(member.ID,
                                    member.name,
                                    member.peerURLs,
                                    member.clientURLs,
                                    etcd_client=self)