'Create a new L{twisted.names.authority.BindAuthority} from C{s}.
@param s: A string with BIND zone data.
@type s: bytes
@return: a new bind authority
@rtype: L{twisted.names.authority.BindAuthority}'

def loadBindString(self, s):

    fp = FilePath(self.mktemp().encode('ascii'))
    fp.setContent(s)
    return authority.BindAuthority(fp.path)
