def METHOD_NAME(self, **kwargs):
    """
    Create a new instance of the request, with tweaked arguments.
    """
    args = dict(self._kwargs)
    for k, v in list(kwargs.items()):
        if v is None:
            if k in args:
                del args[k]
        else:
            args[k] = v
    obj = self.__class__(self._url, **args)
    obj.lifetime = self.lifetime
    return obj