I see that hector_quadrotor already creates an occupancy grid in the roslaunch hector_quadrotor_demo indoor_slam_gazebo.launch example, so now I am wondering if I need gmapping at all or I can use the hector_quadrotor's existing mapping capabilities. Will installing gmapping in the same /src directory of my catkin workspace interfere with hector_quadrotor's existing mapping capabilities, say when I run hector_quadrotor_demo indoor_slam_gazebo.launch? I am looking at rrt_exploration_tutorials but I am trying to figure out how I can use this with hector_quadrotor for autonomous exploration.