from typing import Protocol


def get_arm_id(name, arm_type):
    """Returns the string identifier of a robot arm. For instance, for a bimanual manipulator
    like Aloha, it could be left_follower, right_follower, left_leader, or right_leader.
    """
    return f"{name}_{arm_type}"


class Robot(Protocol):
    def init_teleop(self): ...
    def run_calibration(self): ...
    def teleop_step(self, record_data=False): ...
    def capture_observation(self): ...
    def send_action(self, action): ...