unusedTypeParameterInMethod3.ts(2,21): error TS6196: 'Z' is declared but never used.


==== unusedTypeParameterInMethod3.ts (1 errors) ====
    class A {
        public f1<X, Y, Z>() {
                        ~
!!! error TS6196: 'Z' is declared but never used.
            var a!: X;
            var b!: Y;
            a;
            b;
        }
    }