How to automatically create method definitions from method declarations in NetBeans?

Question

Hello,

I'm using NetBeans for writing some projects. I declared some methods in my header file, e.g.:

public:
    remove(string fileName);
    copyIn(string filePath);
    copyOut(string fileName);

Is it possible to create stubs of definitions for all of these methods automatically, or do i have to write it manually for each of them?

I searched for solution in google, but didn't find any. There is an option "Introduce method" in Refactor menu, but its turned off all the time and i cant use it (i'm not even sure if that option is what i need).

Thx for solution