[nem-en] compiler warnings

[vc]

> The compiler has a few warnings that I really don't want to see right now.
> They include:
> 
> warning : N168: a function parameter <name> was never used
> warning : N10005: ignored computed value of type System.Object
> warning : N10003: method <methodname>: void is not externally visible and
> has never been referenced
> 
> Is there a way to turn these warnings of?

Best way is replace parameter names on "_" or add same prefix.