成员的完整列表，这些成员属于 rm::nav::PurePursuitOptions,包括所有继承而来的类成员

goal_tolerance	rm::nav::PurePursuitOptions
heading_gain	rm::nav::PurePursuitOptions
lookahead_distance	rm::nav::PurePursuitOptions
max_angular_speed	rm::nav::PurePursuitOptions
rotate_to_path_threshold	rm::nav::PurePursuitOptions
slowdown_distance	rm::nav::PurePursuitOptions
target_speed	rm::nav::PurePursuitOptions