Missing Token

class Player {
    constructor(name, id, color, active = false){
        this.name = name;
        this.id = id;
        this.color = color;
        this.active = active;
        this.tokens = this.createTokens(21);
    }

    createTokens(num) {
        const tokens = [];

        for (let i = 0; i < num; i++) {
            let token = new Token(i, this);
            tokens.push(token);
        }

        return tokens;
    }

    unusedTokens() {
        return this.tokens.filter(token => !token.dropped);
    }

    activeToken() {
        return this.unusedTokens[0]; 
    }

    activePlayer() {
                                   // NO CODE - DOESN'T RETURN ANYTHING
    }
}