def validate_bearer_token(self, token, scopes, request):
        raise NotImplementedError('Subclasses must implement this method.')
Perform a non-blocking read on the mailslot
dataset/ETHPy150Open idan/oauthlib/oauthlib/oauth2/rfc6749/request_validator.py/RequestValidator.validate_bearer_token--crossover with--dataset/ETHPy150Open ioflo/ioflo/ioflo/aio/win/wining.py/WinMailslotNb.receive