How to see the code that behind a node?
There are as usual several ways. An easy way would be to look the node up on NodePit, and then follow the blue “Take Me to the Source” button. See the following post for more details:
The link will take you to the corresponding node’s “Factory” code. From there you can navigate to other related classes such as the node’s “Model” (they’re usually in the same directory as the factory). Just navigate “up” one directory.