Access Godot Signal Parameters in C#

Nerztoaster

Help, this has been is my block for the last 4 hours.

I want to make a 3d object clickable and link behaviour to that click but all tutorials in gdscript can just access CollisionObject.input_event(params like event) but I in c# somehow cant.
The doc is void of any explanation on that matter as well, it just assumes you know.

/// <summary>
    /// signal callback if a mouse click is performed on the FrontFace
    /// </summary>
    public void _onFrontArea_input_event( params get marked as error)
    {
        
    }