How to use the @nut-tree/nut-js.Key.A function in @nut-tree/nut-js

static readonly WIN = NutKey.LeftSuper;
    static readonly PRINTSCREEN = NutKey.Print;
    static readonly SCROLL_LOCK = NutKey.ScrollLock;
    static readonly PAUSE = NutKey.Pause;
    static readonly CAPS_LOCK = NutKey.CapsLock;
    static readonly NUM0 = NutKey.Num0;
    static readonly NUM1 = NutKey.Num1;
    static readonly NUM2 = NutKey.Num2;
    static readonly NUM3 = NutKey.Num3;
    static readonly NUM4 = NutKey.Num4;
    static readonly NUM5 = NutKey.Num5;
    static readonly NUM6 = NutKey.Num6;
    static readonly NUM7 = NutKey.Num7;
    static readonly NUM8 = NutKey.Num8;
    static readonly NUM9 = NutKey.Num9;
    static readonly A = NutKey.A;
    static readonly B = NutKey.B;
    static readonly C = NutKey.C;
    static readonly D = NutKey.D;
    static readonly E = NutKey.E;
    static readonly F = NutKey.F;
    static readonly G = NutKey.G;
    static readonly H = NutKey.H;
    static readonly I = NutKey.I;
    static readonly J = NutKey.J;
    static readonly K = NutKey.K;
    static readonly L = NutKey.L;
    static readonly M = NutKey.M;
    static readonly N = NutKey.N;
    static readonly O = NutKey.O;
    static readonly P = NutKey.P;
    static readonly Q = NutKey.Q;