Where can I find the rosfusion.py tool?

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Dear ROS community,

I'm new on ROS, and I'm following the "How to cross-compile any ROS package for Android" tutorial, and everything is ok until the step that I have to add the contents of the file robot_localization.rosinstall generated to the ndk.rosinstall.

I'm trying to find the tool called rosfusion.py because when I execute the command line

./rosfusion.py -n robot_localization.rosinstall -t ndk.rosinstall

it doesn't work. This is what I get from the terminal

~/ros-android-ndk/roscpp_android$ ./rosfusion.py -n robot_localization.rosinstall -t ndk.rosinstall
bash: ./rosfusion.py: No such file or directory

Any help would be really appreciated.

Thanks in advance.