def METHOD_NAME(rotvec: List[float]) -> Quaternion:
    """
    Convert a euler rotation vector into a ROS Quaternion message.
    Args:
        rotvec (List[float]): The rotation vector to form into the Quaternion
            message.
    Returns:
        Quaternion: The newly constructed Quaternion message.
    """
    quat = trans.quaternion_from_euler(rotvec[0], rotvec[1], rotvec[2])
    return Quaternion(quat[0], quat[1], quat[2], quat[3])