'Primes both internal models based on self.priming_mode.
Returns:
A one-hot encoding of the note output by the q_network to be used as
the initial observation.'

def prime_internal_models(self):

    self.prime_internal_model(self.target_q_network)
    self.prime_internal_model(self.reward_rnn)
    next_obs = self.prime_internal_model(self.q_network)
    return next_obs
