How to use the script -- "MeshCombineUtility" ?

Hello,my friends
As we know,there is a script named “MeshCombineUtility.cs” in the Standard Assets. but I do not can use it . In my opinion ,it`s function is that combine the several single meshes to an Mesh,however ,i am not sure .
Can you tell me the function or teach me how to use it!
Thank you !

You don’t. You use CombineChildren. Just drag it to the parent of the stuff to be combined.