def METHOD_NAME(self):
    """
    Performs a deep copy of an FContext while handling opids correctly.
    Returns:
        A new instance of FContext with identical headers, with the
        exception of _opid.
    """
    copied = FContext()
    copied._request_headers = self.get_request_headers()
    copied._response_headers = self.get_response_headers()
    copied._request_headers[_OPID_HEADER] = _get_next_op_id()
    return copied