Template Code Copyright

I’m just starting to learn how to use Unreal Engine, and I am curious about the copyright notice at the top of the default character header file [ProjectName]Character.h. If I modify this template file with my own code while leaving in some default code untouched, what does that mean for the copyright notice at the top? Do I claim copyright, or do I leave the default copyright notice? If I just add one custom function to the template character, can I publish that and claim copyright on the modified template?