can some one explain how this function works?

I cannot understand how this function (c++) works and how it return true or false?
The problem is with the (void)projection; I cannot understand that.

bool Node::SetupCamera(glm::mat4& projection, glm::mat4& modelview) {   
    (void)projection;
    (void)modelview;
    return false;
}

thanks

Edit:
Link to the code at github link

>Solution :

It looks like a stub; it does nothing. Maybe it’s overridden in a derived class?

The (void) someArg; trick is used to suppress warnings about unused arguments.