Comment unused parameters

[efernandez]

Otherwise the compilation fails with: -Werror=unused-parameter
This happens with these flags: -Wall -Wextra

[svwilliams]

@ayrton04 Do you have any particular syntax for writing the would-be variable name? Or are you good with Transaction::ConstSharedPtr /*transaction*/?

[ayrton04]

I don't feel strongly about it. I tend to just leave them as

void method(const Whatever&)

...but I'm indifferent.

[efernandez]

The reason I commented the unused parameters instead of removing them was because the doxygen block references them, which I think it's a good reason against removing them, I guess. Either way, I also don't have a strong opinion.