def clear_buffer(self):
        if self.remote_conn.recv_ready():
            return self.remote_conn.recv(MAX_BUFFER).decode('utf-8', 'ignore')
        else:
            return None
decide the size multiplier based on sequence space (protein/nucleotide)
dataset/ETHPy150Open ktbyers/netmiko/netmiko/base_connection.py/BaseSSHConnection.clear_buffer--crossover with--dataset/ETHPy150Open tanghaibao/jcvi/formats/psl.py/PslLine._sizeMult