Function isArgument

Returns value is
    | { $kind: "GasCoin"; GasCoin: true }
    | {
        $kind: "Input";
        Input: number;
        type?: "object" | "pure" | "withdrawal";
    }
    | { $kind: "Result"; Result: number }
    | { $kind: "NestedResult"; NestedResult: [number, number] }